Brain Rot
The theme of this card trick was inspired by the recent phenomenon of “brain rot”, which was named the Oxford Word of the Year in 2024 (it’s two words, though, right? But I will ignore that for now).
Brain Rot
[brein rot] noun
- A perceived loss of intelligence or critical thinking skills, esp. (in later use) as attributed to the overconsumption of unchallenging or inane content or material.
- Now also: content or material that is perceived to have this effect.
You might think that “brain rot” is a modern term coined by Gen Z youngsters who spend too much time online. However, it was first used by Henry Thoreau in 1854! In this simple routine, you and a spectator somehow manage to locate all the Sixes and Sevens in a deck of thoroughly shuffled cards.
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| Photograph of Henry Thoreau. Image Credit: Benjamin D. Maxham (1848 - 1858) via Wikimedia Commons. |
Much like the web content that inspired it, this is a low-effort and almost self-working card trick (you need to perform a false shuffle and a false cut to make the routine truly deceptive). However, some effort is required to make this memetic effect entertaining.
JUMP AHEAD
On This Page
Effect
Background & Credits
Requirements & Preparation
Method & Presentation
Cleanup & Reset
Performance Tips & Additional Ideas
Final Thoughts
Effect
You begin by thoroughly shuffling a regular deck of playing cards. You tell the spectator that you’re going to demonstrate the “mystical art of cartomancy.” You explain that the cards can answer questions, just like a search engine or an AI chatbot, no matter how trivial the question. You offer to demonstrate using the phrase, “What is brain rot?”
For each letter in the phrase, including the question mark, you deal one card to the table, creating a small, random pile of fifteen cards. The rest of the deck is handed to the spectator, who is asked to cut it anywhere they like and leave the two halves crossed on the table.
The small packet of cards is now shuffled and dealt into two piles, one for you and one for the spectator. A curious elimination process begins using “The Australian Algorithm”, which, you explain, will help you locate the answer to your question. Both you and the spectator deal a card onto the table into a new pile, then put the next one under the packet. Down, under, down, under (hence the name of the algorithm). This is continued until you’re both left holding a single, randomly arrived-at card.
You turn over your card. It’s a Six. The spectator turns over hers. It’s a Seven.
A random mismatch? You look puzzled, as if the trick has failed. “That’s odd,” you say, and proceed to count the discarded cards in your pile. You have one, two, three, four, five... SIX cards. You ask the spectator to count hers. She has one, two, three, four, five, six... SEVEN cards.
This first coincidence is intriguing. But you’re not done yet.
You turn over the top card of your discarded pile—it’s another Six. The top card of the spectator’s pile? Another Seven. You flip both packets completely over to show the bottom cards. Unbelievably, you find a Six on yours and a Seven on hers.
Finally, all eyes turn back to the main deck, which has been sitting untouched since the spectator cut it. You turn over the upper portion—the bottom card is, you guessed it, a Six. You then reveal the top card of the other half. Impossibly, it’s a Seven! “Six, Seven,” you say in a somewhat exasperated voice, “What on Earth does that mean? I’m at sixes and sevens!”
Background & Credits
I was inspired to develop this trick after my two young daughters, aged seven and nine, started shouting “Six, Seven!” at me. I quickly learnt that this is a very popular Internet meme, especially among schoolchildren, and a slang term that, by design, is essentially meaningless.
The phrase is believed to originate from “Doot Doot (6-7)” by Philadelphia rapper Skrilla, which was unofficially released in December 2024 and quickly spread on TikTok. While the song’s lyrics are purposefully ambiguous (possibly a form of “criminal cant”), linguists and fans have speculated that the “6-7” could refer to a police radio code (10-67, for a death) or 67th Street in Philadelphia or Chicago, where Skrilla also has family connections.
| Doot Doot (6 7) by Skrilla. Video Credit: Skrilla via YouTube. |
Skrilla has commented on the meaning of “6-7”, stating that he has intentionally resisted giving it a fixed, public definition. In an interview, he said, “I never put an actual meaning on it, and I still would not want to,” adding that the ambiguity is “why everybody keeps saying it”. When asked, the 26-year-old rapper from Kensington said, “Everybody else got their own different meaning,” before going on to elaborate, “But for me, it’s just ‘negative to positive.’ It helped me turn from a negative person to a positive person.”
The song first gained memetic traction in video edits of professional basketball players, most notably LaMelo Ball, who is exactly 6 ft 7 in tall. The phrase was further popularised by high school basketball player Taylen “TK” Kinney, who went viral for using it to rate a Starbucks drink.
In March 2025, a boy named Maverick Trevillian became known as the “67 Kid” after a viral video showed him yelling the phrase at a basketball game while performing an excited up-and-down hand gesture. This is the clip that cemented its status, especially among primary-aged (elementary) schoolchildren.
Through this rapid remixing, the phrase has undergone what linguists call semantic bleaching. It has been stripped of any original meaning and is now a prime example of “brain rot” slang—a phrase popular simply because it is nonsensical. Ironically, this is a perfect reflection of the classic English idiom “at sixes and sevens”, which describes a state of total confusion or disarray—exactly how most people feel about the song’s lyrics and the viral meme it created!
The method revolves around a seventeen-card setup, Max Holden’s Cross-Cut Force and the Down-Under Deal. The Cross-Cut Force first appeared in Max Holden’s trick “The New Knife and Selected Cards” in Edward Bagshawe’s The Magical Monthly (Vol. 2 No. 10, July 1925, pages 199-200).
The Down-Under Deal is very old and of unknown origin. Karl Fulves, writing in Pallbearers Review (1970), states that John P. Hamilton named “a development of the deal” the Australian Deal. This development was built on an earlier elimination procedure published by Rusduck in 1945.
The trick also makes use of Paul Curry’s Swindle Shuffle, which first appeared in “A Swindle of Sorts” in Paul Curry Presents, published in 1974.
Requirements & Preparation
To perform the trick, all you need is a regular deck of playing cards. Remove the four Sixes and Sevens and arrange them in the following order (the Xs denote any indifferent card): 6D-7C-X-X-6C-X-X-X-X-7S-X-X-6S-X-6H-7H-7D. Place this seventeen-card setup on top of the rest of the deck. You’re now ready to perform the trick.
Method & Presentation
Take the deck and perform your most convincing false shuffle; I use a standard overhand jog shuffle: undercut approximately half the deck, give or take a few cards, injog the first block, and then shuffle off. Undercut at the injog and throw all the cards below it on top to bring your stack back to the top of the deck. The main risk here is that you might accidentally undercut more than thirty-five cards and hit your pre-arranged slug, so a modest amount of practice is required to avoid this common pitfall.
🔥 Hot Tip: Arrange the seventeen-card packet and hold it face down in Dealer’s grip. Use your left little finger to introduce a small crimp into the lower right-hand corner of the face-down Seven of Diamonds (the last card in the stack). You can then use the crimp as a visual cue to avoid cutting into your setup when performing an overhand jog shuffle.
Finish this shuffle sequence by getting a break below the top card of the deck (the Six of Diamonds) and performing a Double Undercut, displacing the card to the bottom of the deck. I like to conceal this “controlled cut” as follows: cut the top half to the bottom, using your right thumb to maintain the little-finger break. Then, cut all the cards above the break to the table. Finally, drop the remaining cards on top with a definitive thud. This is a much more natural way to perform a Double Undercut.
Start by telling your spectator the cards can answer any question, “Just like Google or ChatGPT, no matter how trivial. Let’s ask it a very modern question: ‘What is brain rot?’”
Spell-deal the phrase, “W-H-A-T-I-S-B-R-A-I-N-R-O-T-?...”, and as you deal the final card for the question mark, say, “And one for the question mark—because punctuation is important!”
Hand the remainder of the deck to your participant and guide her through Max Holden’s Cross-Cut Force. Tell her to “cut the deck somewhere in the middle”, and then to place the cards left in her hand “at an odd angle” on top of the pile on the table.
Return to the small pile of cards. You’re now going to guide your participant through Paul Curry’s Swindle Shuffle to give the appearance that the cards are being randomly mixed (this sequence will secretly reverse the packet’s order).
Hand the packet to your participant. Explain her two choices, demonstrating only the actions without actually shuffling through the packet.
“We’re going to mix these cards in a very special way. This mixing procedure is similar to the way automatic shuffling machines work in professional casinos. It is called the “DEAL or SWITCH” shuffle. At every step, you have a free choice.
You can DEAL—just take the top card and deal it to the table.
Or you can SWITCH. For this, you take the top two cards, swap their positions in your hand, and then drop them as a pair onto the pile on the table.
Keep making that choice—deal or switch—until you have no cards left in your hand.”
As your participant is shuffling the cards, add this line:
“How you mix the cards will determine whether this experiment in coincidence works or fails. No pressure!”
This “Deal or Switch” shuffle is a wonderfully deceptive procedure. Despite the apparent randomness, the participant’s single “shuffle” is not a shuffle at all. It simply reverses the order of the entire fifteen-card packet, setting you up for the multiple revelations that follow.
Take the cards and deal them into two piles, one for your participant and one for you (the first card must go to your helper).
Situation Check: There is a seven-card pile in front of you, in the following order: 6H-6S-X-X-X-6C-X. There are a total of eight cards in front of your participant, in the following order: 7H-X-X-7S-X-X-X-7C. The method is done, even though the effect is yet to begin!
Perform a Down-Under Deal on your seven-card packet. As you do so, talk about “the Australian Algorithm”, dealing the first card down to the table and sliding the next under the packet. Continue doing this until you hold a single card—the Six of Clubs.
Make a knowing expression and say, “Ah, the Six of Clubs!” as if it holds some more profound significance.
Get your participant to complete a Down-Under Deal on her eight-card packet, leaving her holding the Seven of Clubs.
Look puzzled, and say, “Oh, they don’t match. A Six and a Seven. I guess they’re both Clubs? And… sequential? My apologies, I think the cards are… at sixes and sevens!” This silly joke makes it sound like you’re clutching at straws, lowering expectations. (The weak throwaway pun will make the real final line hit that much harder.)
Drop these cards aside, the Seven above the Six, face up on the table.
“Hmm, I wonder… How many cards do I have here?” Count the number of cards in your packet out loud as you deal them to the table. “One, two, three, four, five, SIX! Okay, now it’s just getting weirdly specific.”
Turn to your volunteer and say, “Hold on. How many cards are in your discard pile? Count them.” They’ll have a total of seven cards! Once they’ve counted their cards and dealt them to the table, say, “Six, seven. Another small coincidence!”
At this point, your tone should change from puzzled to frantic. Speed up your actions. Turn over the top card of your pile, revealing the Six of Hearts, as you exclaim, “Okay, look! My top card is a Six!” Turn over the top card of your participant’s pile and shout, “And your top card is a SEVEN! Six, Seven again!” as you reveal the Seven of Hearts. Drop these two cards on top of the Six and Seven of Clubs, being careful to maintain the Six-Seven order.
Don’t pause. Impatiently, flip your entire pile face-up to reveal the Six of Spades. “What?! My bottom card is another Six!” you say excitedly. Point to her pile and say, “Turn yours over!” She’ll reveal the Seven of Spades. “Another Seven. What’s going on? Six, Seven, Six, Seven… are you doing this?!” Add these two cards to the face-up pile.
Tidy up the two piles of indifferent cards, combining them and placing them aside, still face up.
Look at the crossed-cut deck, as if you’re scared of it, and say, “No. It can’t be…” Slowly pick up the upper portion and turn it face up to reveal the Six of Diamonds. “A Six,” you say. Add this card to the growing Six-Seven pile. Then, drop the face-up cards in your hand on top of the face-up discard pile. Dramatically flip the top card of the lower packet to reveal the Seven of Diamonds, as you shout, “...and another SEVEN!”
Add it to the pile. Pause and let the multiple coincidences sink in.
Drop the remaining cards on the face-up discard pile, reassembling the deck. Pick up the pile of Sixes and Sevens. Raise the cards to chest height and count them from hand to hand, the faces of the cards towards your audience, as you say, “Six, Seven, Six, Seven, Six, Seven, Six, Seven. I don’t get it. What on Earth does that have to do with brain rot? I really am at sixes and sevens! Never mind, let’s do something else…”
Cleanup & Reset
No cleanup is necessary. To reset the effect, you’ll require some quiet time away from inquisitive eyes while you reassemble the setup on top of the deck.
Performance Tips & Additional Ideas
The increasingly rapid and frantic pace is crucial to the routine’s appeal and overall success. You should not just be performing the trick; you should appear to be a victim of it. Embrace this unhinged delivery style. Your character should visibly deteriorate as the coincidences pile up, moving from puzzled to frantic to utterly bewildered. This is another example of “Perverse Magic”, like my effect “Pipo’s Perverse Production” that I published in Marty’s Magic Ruseletter (Easy Does It #6). The entertainment comes from watching the performer’s orderly world (and mind) visibly crumble into complete chaos.
The routine is funniest if the performer ends the trick without getting the joke. This is especially true if you’re a Baby Boomer, Gen Xer or Millennial performing for a younger audience. Your final line, “I really am at sixes and sevens!” should be delivered with an air of complete, frustrated confusion, not a “wink-wink” acknowledgement (although it is another approach you can take if you so wish).
Young people in the audience will often get the “6-7” reference before you do. They will likely start chanting “six-seven” at you as the cards are revealed. You must ignore this completely. Your performer persona doesn’t understand the meme. Their chants will just add to your on-stage confusion, making you look even more like a victim of “brain rot”, which ultimately makes the routine funnier and more chaotic.
If you are comfortable with it, you can allow the spectator to perform Jay Ose’s False Cut on the deck after you’ve performed your false shuffle. This adds another layer of “fairness” and spectator involvement, though it’s not strictly necessary.
For magicians who are paranoid about the participant’s Swindle Shuffle, you can perform the shuffle twice. First, reverse the setup. Then, perform the Swindle Shuffle yourself as a “demonstration” (reversing the packet), and then have the participant perform it (reversing the packet back to its correct, stacked order). This is more time-consuming but adds another layer of deception and helps avoid your participant making a mechanical mistake.
Given the extensive setup required, “Brain Rot” works best as an opener. However, if you prefer to perform it mid-set, you could perform a deck switch after your participant thoroughly shuffles a “decoy deck”.
The “6-7” meme has become a bit of a nightmare for math teachers all across the world, and you can use this as a hook for a short, themed set of card magic. To do this, you could perform “Brain Rot” with a modified Piquet pack—a thirty-three-card deck that I’ve used for previous tricks of mine. First, remove all the high cards—the Nines, Tens, Jacks, Queens, and Kings—from the pack. This leaves you with only the Aces, Twos, Threes, Fours, Fives, Sixes, Sevens, and Eights in each suit. Then, add one Joker to complete your special “Piquet pack”. This specific setup allows you to flow directly into a follow-up routine like “Pythagorean Prediction” (from my Piquet Pack Series), which also features a fun, rudimentary maths presentation.
If you don’t want to use the brain-rot themed presentation, then you could use the English idiom of “at sixes and sevens” as the leading hook for the routine, as this justifies why you’re producing the four Sixes and Sevens. The phrase “at sixes and sevens” means to be in a state of confusion, disorder, or disagreement. It originated from the medieval dice game of hazard, a more complicated game of craps. The original expression was likely “to set on cinque and sice” (French for five and six), the riskiest throws in the game. Anyone who tried for them was considered careless or confused. Over time, the words were likely misunderstood or misheard, and replaced with “six and seven”, and the original phrase was corrupted. This isn’t that dissimilar to what has happened to the modern brain-rot phrase “6-7”.
Finally, for a more adult, provocative, and NSFW theme, you can re-frame the trick as the “69” trick! 😉
This version moves away from “brain rot” and into the salacious world of sensual temptation! To create your two packets, you would first spell-deal “S-E-N-S-U-A-L” (seven cards), followed by “T-E-M-P-T-A-T-I-O-N” (ten cards). This, of course, requires a new seventeen-card stack, which you would need to engineer so that the final cards revealed are Sixes and Nines, rather than Sixes and Sevens.
This erotic and risqué style of trick could be a good saucy alternative if it fits you as a performer and you have a suitable audience. I’ll leave you to develop the new stack, mechanics, and presentation if this kinky presentation is your kind of thing!
Final Thoughts
This trick started as a complete throwaway, an attempt to build something inspired by a trivial internet meme. Honestly, topical magic can often feel disposable, and for good reason. However, “Brain Rot” surprised me. It’s become a strong, almost self-working piece of magic that I genuinely love to perform.
The routine’s strength lies in its self-referential nature. The method is a solid, multi-phase card mystery with a powerful, layered climax. The “brain rot” theme provides the perfect, hilarious justification for the sequential production of the Sixes and Sevens. It gives you a character to play—the confused performer whose world is crumbling into chaos—which is always more entertaining than just being a smug trickster.
This routine has a very short shelf life. Once the “6-7” meme is dead, this trick dies with it. But in a way, that’s its charm. It’s a “moment-in-time” piece, much like the “6-7” meme itself. Performing it shows your audience that you’re current and relevant, not some dusty relic in a tophat and tails.
“Brain Rot” is a brilliantly bonkers piece of “Perverse Magic” that’s perfect for younger audiences. It’s chaotic, hilarious, and baffling. Get out there and perform it before the “6-7” meme—and our brains—rot away completely!
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