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 Ben September 11, 2003
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is fat.
Yo mama so fat she needs cheatcodes for the Wii Fit.
by Maxgamer345 February 26, 2022
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1. a TV show with Wilbur Valderama(Fez from "That 70's Show"
2. A cruel start to a funny joke.
3. Your mother.
1. "time for YO MAMA!!!"
2. "Yo mama so fat when she sit's on a rainbow skittles fall out."
3. Lynn Ann Wilson
by The Child March 28, 2008
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"yo moma" is something you say in front of every sentence that some1 says just to piss then off
Guy 1: I'm going to tie my shoes
Guy 2: YO MOMA'S GONA TIE HER SHOES!!!

Girl 1: That Girl is a slut.
Random Guy 1: YO MOMA'S A SLUT!!!
by J R Stokes July 5, 2004
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They call yo mama "The Squirrel" cuz she always got nuts in her mouth!
Yo mama like the bus: everybody gets a ride for one dollar!
by Nasty Nate October 3, 2003
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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.
"Yo mama" so fat, she have to go downstairs sideways.
by Ajjax August 19, 2006
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Slang for "your mom". A nice insult! Talking about your mom is really insulting.
Ex. 1
Some guy: Get a life...
Person responding: Yo mama!
Some guy: What did you say! *beats up person responding

Ex. 2
Some guy: You fat pig...
person responding: Yo mama's a fat pig!

by GABEMSTR November 15, 2006
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