Battle-tit
A popular two-player game, similar to "battleship," that requires no equipment except a shirt worn. The object of battle-tit is to poke out both nipples of the opposing player. The game is played through respective turns. Every turn, a player attempts to poke the nipple of the opposing player. The opposing player must keep still, and then announce whether the active player has poked them in the nipple or not, saying "hit" or "miss". The first player to "hit" both nipples is declared the winner.
"Hey Grace, I'm bored. Wanna play some battle-tit?"
"Sorry Henry, but the first rule of battle-tit states that girls cannot play."