1)A sound shouted when one is in the process of doing something fun.
2) Online, an expression to say "i'm bored." or "I'm in a great mood" or anything else a person could think it to mean.
3) An extremely funny online song including a squirrel who sings about his private parts and strife.
1)~"garsh golly im bored."
2) *child runs around crazily in circles* "weeeeee!"
3) (taken from Weee! the song)
"once, i saw ths guy and he was like OMG i got a knife and i was like OMG weeeeeeeeeeeeee!"