A joke consisting of the specific phrase, "Yo mama (is) so---". It is an amusing, yet degrading style of joking. Use it when you are mad at someone!!!
Yo mama be so fat, she got baptized in Sea World.

Yo mama so greasy, she sweats Crisco.

Yo mama so big, when she was floating in the ocean, Spain conquered and claimed her as their New World.

Yo mama so big, she uses a paint roller to apply lipstick.

Yo mama so greasy, Texaco buys oil from her.
by No Name Entered December 29, 2007
A silly phrase which is often followed by a completely unfunny jibe. Often used by idiots online who can't think of these things spontaneously.
"Hey! Yo mama so fat/ugly/dumb/whatever that (insert pointless metaphor here)."
by KHD September 04, 2003
yo mama so fat, you gotta take two trains and a bus to get on her good side
yo mama so dumb, she thought a quarterback was a refund
yo mama so poor, i saw her kicking a can down the street, i asked what she's doin, she says "movin"
yo mama got the glass eye with the fish in it
by spanky July 10, 2003
Literally, "Your" (n.) - 'an English word that is used when one person is talking to another and they want to refer to the person they are talking to in a 1st person point of view' + "Mother" (n.) - 'an English word that describes a female of a certain species that is or was capable of sexual reproduction at some point in their lives and exercised that aspect of their lives, and caused the creation and growth of a fetal offspring in their womb, egg, or pouch'; therefore, "Your" + "Mother" = the mother of a creature that a person who speaks English is referring to in a 1st person point of view. Don't you just love these literal definitions to just irritate the hell out of people?
Yomama fer shizzle my nizzle dog.
by VineyardPK May 13, 2006
Something that provokes jokes. YO MAMA!
Something you say if someone asks you what you wanna do. YO MAMA!
Dick: What are we doing in Science today?
Dicky: Yo Mama!
Frick: Hahahahahaha!
Fricky: Shut up.
Dick: Really, what are we doing in Science?
by Garfield135 May 16, 2007
Yo mama= a sexy thing to add after EVERY phrase!
"josh: you are so gay!"
"scott: no yo mama is so gay in bed!"
by BUTTERNIPPLE June 22, 2007
That fat smelly bitch who cooks me dinner and licks my ass...
Certificatologist: "yo' mama better be making some good shit tonight, or I swear I'll smack that ho!"

Midget: "my mother has been dead for 16 years."

Certificatologist: "I'd still do her..."
by Dr Todd Fuquad PhD June 18, 2006
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