1) A group of jokes meant to criticize one's mother by saying that she is fat, ugly, stupid, etc.

2) A lame phrase someone I know keeps saying whenever I ask him a question about PE because he has it before me.
1) Yo mama so ugly people watch her during horror movies.

2) Me: Hey, what are we doing in Pe today?

Him: Yo Mama!

Me: Shut the f up.
by army_azn December 09, 2004
yer mum basically. That's about it really. Need a few more words to fill this thing in.... hmm. Will that do the trick?
Yo mama told me she don't know HOOOO yo daddy woa-wwwwwwwz!
by Arthur Atkinson February 10, 2005
aka ya muva
ya muva eagle man
by Yoshi February 25, 2004
One's mother, typically used as an insult, or a half assed answer to a question.
yo mama so stupid, she went to go buy a porn, and came back with a video head cleaner.
Q: what is the average population density of the united states?
A: Yo' mama!
by O. G. cripple D loc November 05, 2003
your mother
yo mama's a llama
by sTeALtH September 11, 2003
Someone who is so stupid that she got killed before she started existing.
Yo mama's so stupid, she got stabbed in a shootout.
by dj gs68 August 23, 2003
YO Mama is an instult to your mama uh dee dee dee,I suggest that you watch Carlos Mencia too figure out what that means
:P
Yo mama is so fat that when she went on a diet it looked like she had a toga on(burn bish)
by John Roy October 14, 2006
a diragatory term to describe one's opponent's mother.
yo mama is so fat she was wearing a yellow shirt and jumping on a trampoline and she went up really high and then sun started singing "We are family".
by stephanie nelli October 12, 2005

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