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A name for someone who is socially awkward (i.e. suggests morbid inner thoughts and awkward conversation topics) and has a tendency to screw things up, known as "mo"-ing, or "mo"-ing up.
If someone left a glass with water outside in the winter and it cracked, then they mo'd it the fuck up.

if someone breaks a valuable possession (i.e bong) in the process of doing something they think is good for it (i.e. cleaning) then they mo'd.

Mo example in speech:

person 1: "... so then he said-"
person 2: "-hold on a sec, i have to go take a shit. come to think of it, I might eat some food while im in there. Im thinking bananas and club soda. be right back."
person 1: ".....wtf? fuckin mo."
Mo by frazdizzle December 4, 2007
Related Words
Morgan mom Mollies monkey mo Money motherfucker mo mo Mormon mook
a person who has no personality, or the act of havingno intelligence what so ever
a joke that everyone clearly understands, a Mo would say something like OMG get it... wicked delayed
Mo by cjh26 August 20, 2010
1)Short for mom
2)Short for more
3)Short for moron
4)nick name
1)But MO!
2)I'd like some mo, please.
3)Shut the fuck up MO!
4)His real name's marcus, but we call him mo
mo by Sylk Cream October 5, 2005
Morbidly Obesse
MO by andi January 16, 2004
more, but to an exsesive extent!!!
mo ho's than wife swappin mothers meeting!!!
mo by princess D October 30, 2003
Very or extremely
Mo fat ... very fat
mo by Anonymous November 3, 2003