Mo

An exclamation to express you amazement at something that is good.

Ice cream is ready.
Response: mo!

You just won a million dollars.
Response: mo!

by gerrypez July 14, 2009

Mo

A guy who is quite random and just doesn't give a Fuck about anything, he/she is extremely underrated and at times he/she is immensely overrated, he/she is the type of person who will Fuck you over without even knowing it and is very funny, also really good at impersonations but something makes it seem as if he is attracted to the same sex

Yo mo, why are u staring at that guy, are u gay
Hahahaha, man that is hilarious
What the actual Fuck mo, why would I tell her I have a crush on her

by Kyle Johansson December 19, 2016

Mo

adj or adv. really or a lot

1) My toe emits a mo putrid stench resembling burnt monkey sauce and dolphin ass.

2) I miss you mo!

by Michael Carrier July 27, 2004

mo

A severe contraction of at least four words. Spoken when time is of the essence in speech.. fights, heated disputes, et cetera. "I am going to" becomes "'Mo".

"Mo beat your ass bitch!"
("I am going to beat your ass bitch!")

by happyguy49 March 27, 2009

MOS

Mom over shoulder, often said in AIM to keep the reciever of the message from saying something particuarly "nasty" or "questionable"

DarkBob101:MOS
UT4k2:What the hell does that mean?
Darkbob101:Too late...

by Connor September 30, 2004

Mo

Cool. Very cool. A leader by instinct. A fan of vagina.

Examples of leadership include the famed czar of D Wang, Mo. He is the man.

by Mo Ali May 9, 2005

mo

stands for make out

My boyfriend and I totally moed at the river yesterday for like 2 hours.

by skizzylizzy June 27, 2008