When a male sits down in a seat and accidentally sits on his balls. This is usually accompanied by a shouted expletive and an abrupt jump out of the seat. It happens so quick, it's as if they've bounced off of their balls.

The sexual or nonsexual act of hopping up and down tescticle first on another's testicles.

When you ask someone if they want to do something with or for you and they say no with a little tude (attitude).