Raising Cane by Gregory Wilson & David Gripenwaldt

Inspired by David Williamson, a spectator uses a napkin to clean out a small cup and its lid to make sure everything is completely dry. The lid is placed on the cup and they hold it high above their head. You pour the contents of a sugar packet into your hand, and shortly thereafter, it completely disappears and reappears inside

the cup they’ve been holding high above their head — without the cheat of a thumb tip!