Background: The performance is a magic trick, a form of slight of hand that uses a hair scrunchie or similarly elastic bracelet, the informant (RW) learned it on the playground from one of her friends.
RW: It’s so cool!
MW: What do you like about it?
RW: When you do it right everyone gets really excited!
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Context: Informant(RW) is a 12 year old student who’s interests include spending time with family, and riding bicycles. RW shared this particular magic trick with multiple members of her family during their annual Passover Seder, in this case RW, her sister, and I were getting paper from the garage so that RW’s father could teach us to make paper airplanes when she asked to show me a magic trick.

Performance:
RW: Ok, ok, so first you twist the rope like an 8 on your wrist
RW: You do that and you see this part? [RW points to the loop formed by her bracelet]
RW: The under part [she gestures to the under side of the bracelet], and you pull that part into the little circle but not too tight.
RW: If you flick it really fast the knot disappears!

Steps to reproduce:
1)Twist a section of the bracelet into a loop
2)Take the underside of the bracelet a pinky length away from the loop and pull it through to make a knot, loosely
3) Flick the end of the bracelet that sticks out of the knot and it disappears
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Analysis:
The trick is a way to “get one over” on one’s peers and even adults. Thus the child demonstrates “magic” that they know to be a reflection of their own knowledge. The informant’s pride is the key marker here, this piece of folklore is a performance passed from person to person for the benefit of the people around them. Likewise this is a display of trickery, the goal is to fool, and thus in harmless deception traverse the social taboo of lying. This gives the performer the space to engage in a behavior that is generally seen as wrong in a way that will actually net them praise.