1. A phrase used as a formal declaration of defeat. For example: "Kenneth replied 'yo mama' when he realized he could not counter his opponent's point."
2. The principle part of a "Yo Mama" joke, usually entailing a description of your mother being so "something" that "something" occurred as a result.
1. Amy: You're so ugly!
Gwen: Yeah, well so's YO MAMA!
2. "Yo mama so fat, the last time she saw 90210 was on a scale!"
"Yo mama so dumb, she thought a quarterback was a refund."
By Carey
Yo Mama!
1. a TV show with Wilbur Valderama(Fez from "That 70's Show"
2. A cruel start to a funny joke.
3. Your mother.
A term that originated in street diming which precedes an inventive insult to the other person's mother. Presumably because once upon a time, in the 'hood, Mothers were highly prized.
The person who loves you even if you act like a heartless bitch who cares about only yourself. The person who argued for their right to have you in the first place, and has never been sorry she did even when you completely turn your back on her. The place you can always go when you find out that friends come and go but your mother will always be there to help you pick up the pieces.