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
mostly a joke aboat someones mom
yo mama is so poor she told your little sister that santa clause is dead.

yo mama is so poor when someone put out the cigarate in the house they said who turned off the heat.

yo mama is like the pills dairy dough boy every one wants to poke her.

yo mama is like a brick wall she is always getting laid.

yo mama is so fat even rickerd simones laughs at her.
by Evan January 28, 2004
a commonly used phrase used to demean ones mom.
your mother looks good in leather
by ganj0r November 30, 2003
yo mama
yo mama iz so fat, she haz got more rolls than a supermarket!!!
by youtalkintome? November 07, 2003
the response a pimply faced kid has for everything.
So dean what is the anser to question number 4 YOUR MAMA
by asian September 08, 2003
a diss or a joke
yo mama so old she sat next to jesus in 1st grade

yo mama failed this test... even jesus failed!
by im soo hoooooood ;] April 30, 2009
The butt of all lame jokes.
Asshole: yo mama is so fat, she was... so fat!

Person:...
Person2:...
Person3:...

Asshole: That's ok, because you all gotta save your laughter for this next one!

Person2:...
by hanes July 20, 2005
a response that retards give to every question asked even if the question is not directed toward the retard
shelley: so what are you gonna do today katrina?
katrina:(interrupted by tait)
tait: YO MAMA!!!
by hmm take a good guess July 10, 2004

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