I Hit People on Purpose For Fun

 I HIT PEOPLE ON PURPOSE FOR FUN, or PILEUP
duel; tournament

based on ‘one potato, two potato’. players alternate their hands, stacking them on each other (left-one, left-two, right-one, right-two). do this as fast as possible. if someone fails or delays, they are eliminated. actions:

- pile: place fist on top of stack.
- swat: open hand on top of stack. respond by clapping hand with one below.
- flip: bump hand on bottom of stack. all actions flip direction (e.g. piles on bottom) until next flip.
- tweak: grab fingers, pull out straight. respond by pulling in. be gentle.