You bet your butt 

To belief in something so certainly one would put their butt on the line.

'We're not really going to do this are we?' she asked incredulously.

'You bet your butt we are,' he replied.

You bet your butt by PrinceJolo June 23, 2018

nigger bet

when one makes a bet with another person, and the loser becomes the winners nigger and has to do whatever the winner of the bet says for an established period of time, but if the winner of the bet tells anyone that the other person is thur personal slave/nigger the bet is reversed and the winner becomes the nigger for the rest of the time remaining

Ill make a nigger bet with you that my dick is bigger than yours.

nigger bet by seany boy August 7, 2007

Phat bet

When somethings sounds really good

You can take me to jasons deli?
Phat bet!

Phat bet by Jaydididid June 11, 2017

lose a bet 

When one of your friends arrives with an ugly date.

Damn Katie, did you lose a bet?

lose a bet by T. M. December 26, 2005

ok bet 

Used when someone agrees with said statement

bob- “we can meet at the starbucks”
karen- “ok bet”

ok bet by urbesthomie42969 February 24, 2022

I bet 

Used to indicate sarcasm

Dude 1: My legs hurt
Dude 2: Hmph i bet
Dude 1: Seriously, man! they hurt

I bet by your best idiot April 5, 2010

slap bet

Bet made on an item of trivia in which the losing party gets the shit smacked out of their face.

A: I think it's clavicle.
B: It's definitely tibia.
A: Slap bet?
B: Sure. (They shake.)

Later:

C: A bone named after the Italian word for flute is tibia.

(B smacks the shit out of A)

slap bet by heisenbergian August 29, 2009