a strike up word. usally used on aim by guys who are too scared to talk to the girl they like or incredibly hyper people. also a great word to use if someones talking to you and you dont want them to.
john: moo Jane: wtf? john: idn wat^ jane:nmu John: cool ... so on and so forth till the girl realizes wats happened and thn has to leave all of a sudden Kyle: hey jon: moo kyle: wat jon: moo kyle: ok i g2g fag
By notamoocow
The name given by a hot lady to a kitteh that looks like a cow it is not the name of a guitar
"this is mah kitteh" "it looks like a cow!! ima call it Moo!!!"
By themostamazingbrian
A sound made by people who are so tired that they don't care if people think they are cows.
Fred: Moo Sally: Wow! Fred is a cow!
By Derald
A sound someone might make when sad. It symbolizes how said person is a large animal that is meant to be killed and eats grass all day.
Bully: Fork you Jennifer you smell like cut grass and you poop all day Jennifer: Mooooooooooooooooooooooooooooooooooooooooooo Bully: . . .you're a forkin weirdo Jennifer
By kayORANGE
(adjative,verb,noun) The F word. Fuck, to fuck, is fucked, a fucker.
person#1: yo wats up person#2: your mom person#1: moo you person#2: no,moo ur mom person#1: you mothermooer, dont go there. person#2: so wat if i go there person#1: ima mooing kill you person#2: go moo urself u know u like it. person#1: moo this im leaving, to think i was trying to start a decent conversartion with you person#2: ohh....im sorry? person#1: too late man, im leaving. too little too late. im mooing out.
By emblem2000