Bet

A truly meaningless comeback with absolutely no use at all and shouldn't be allowed to be used. Bet is a comeback only people at the age of adolescence. It's a bad comeback generally; you're only trying to make yourself look better.

Person 1: hey you stupid idiot
Person 2: fight me
Person 1: bet
Person 2: *beats the ever living shit outta them*

Overall, only losers will ever say bet, and almost everytime you beat somebody in a game, race, whatever it is, you may hear this work of modern art. Don't use this word. Ever.

"bet I'll win you later shithead"