look up any word, like plopping:
 
1.
the inability for for someone to say the word woah and all that comes out is !Wooo!
OMG!! im high and falling down a hill !Wooo!
by Tayler06 February 25, 2009
 
2.
The sexiest forum mod EVAR.
"Damn, that mod is such a Wooo!"
by Mafi|m00 January 20, 2004