The act of unknowingly folding any loose cash you have stored in your pockets into such an odd shape that it might be recognized as a shape other than a dollar bill.
"That'll be $11.87. Please pull up to the next window."
*Pulls out cash*
"Dude what is that? It looks like a bird."
"No thats a twenty dollar bill."
"Oh. Looks like you've been taking some pocket POCKET ORAGAMI classes."
"You're fucking gay."