Mo 

a shorter version of mother Fcuker

Shut up you Mo!

Mo by cait March 14, 2004

mo 

my bestest friend...everyone at pueblo luvs mo!!! even the preps like him...he is a great boyfriend....but he gets too afectionate....tight playa....all the girls like him!!!!

omg mo....we all luv u so much....u r like my bestest friend!! luv ya!!!

mo by oriana November 24, 2004

mo 

Short for mom, although mom is pretty short already. Whatever.

Hold on, I gotta call my mo.

mo by sea turtle December 27, 2008

MO 

MO is a word used to describe the feeling you get when a person is just chilling, typically on a couch, in a car seat, or in class and you get a sudden urge to subtley jerk into movement. Some poeple call this "getting the chills". However, the deal with MOs is that if you get 8 in one 24 hour span, you have officially had an orgasm. Bryan Matt coined this phrase.

Maura: Wow! I just got the chills.
Bryan: Hey Maura, do you know what you just had?
Maura: No.
Bryan: You just got a MO. 7 more and you are good to go.

MO by Team Baby Bubbla February 14, 2008

mo 

verb, "to do a mo", to fail at ones objectives - referencing Mo the bartender in popular cartoon sitcom "The Simpsons"

guy 1: hows your coursework going dude?

guy 2: I quit university...

guy 1: What with only 6 months left to go??? You doing a mo man

mo by warblings December 5, 2010

Mo 

Short for "mother" or "mother fucker" used to show exajuration. (spelling?)

"MY TOE HURTS LIKE A MO ON HER BIRTH DAY!!!!"

"Duuudee"

Mo by jake February 7, 2005

mo 

could mean anything. Usually used in a sentence as "You are mo" or "I feel mo" which can mean "You are gay" or "I feel strange".

I'm feeling pretty mo today.

mo by blokzberry July 11, 2006