slap bet
Noun
Meaning
slap bet (plural slap bets)
(US) A wager between two people (especially children) that involves no money, but in which the winner is allowed to slap the loser as hard as they can.
Noun
slap bet (plural slap bets)
(US) A wager between two people (especially children) that involves no money, but in which the winner is allowed to slap the loser as hard as they can.