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 10, 2004
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Literally means your mother. It is sometimes used for mockery or insults. For example:

Guy 1: Guess who's gonna kick your ass?
Guy 2: i know who's gonna kick yours.
Guy 1: who?
Guy 2: Yo mama. Aha!
by MOshizzle November 23, 2007
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Yo Mama is a YouTube channel created by Zack James. It's hosted by the fictitious Brody Foxx. In the show, Brody Foxx makes maternal insults towards a random mother. The show has made several jokes involving pop culture. This is funny.
I love the Yo Mama YouTube channel!
by Chillin95 October 8, 2020
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Yo mama's so fat, it took 500 pages just to fit her in Guiness
Yo mama's so fat, when she ran for congress, she represented 10 states
Yo mama's so fat, she auditioned for Terminator 3 and got the part as the human resistance
Yo mama's glases are so thick, she starts fires everytime she reads
Yo mama's teeth are so yellow, she has to wear sunglasses to look in the mirror
by Gary Destruction April 2, 2004
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the lamest roast ever that 12 year olds on discord or fortnite use to try and insult someone. But a infamous way of jokes
12 year old: YO MAMA SO FAT uh she uh ate you OHHHHHHHHH

derrick: the fuck?
by pseudonym ツ October 20, 2020
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a term used in jokes and used for no reason at all sometimes
Yo mama so stupid she put a quarter in a parking meter and said "where's my gumball?"
by real men wear pink April 25, 2006
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someone of whom jokes are frequently made about.
yo mama so stupid, she took the Pepsi Challenge and chose Jif.
by Ryan J. January 29, 2005
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