game played in the car while driving/riding with friends.
version one for younger crowd (more often a same-sex group): first person who spots a vehicle with a headlight out gets to punch the other in the arm as hard as they want.
version two for older mixed sex groups and couples: same as above but person who spots the missing headlight gets to kiss the person of their choice.
so it can be both a "fun" game and a date game.
girl: (sees car with headlight missing) "padiddle!"
turns to guy and says "pucker up..."
(ensuing accident covered by insurance, blamed on missing headlight. injuries to tongues also covered by auto insurance, but only if injured while car was moving.)