A word used when you are overly excited, hyper, having fun, or when something great happend to u. You can also use this word repeatedly when you are bored and want to annoy someone. Also this word is used in Sims 2 which means SEX in the game.
dudette: WOO HOO!
dude: anyways..i aced my math test today WOO HOO!!
dudette: woo hoo!
dude: im going to have fun tomaro at the mall woo hoo!!
dudette: woo hoo!
dude: STFU
dudette: sorry i just drank 2 redbulls and im hyper and excited because my sims are about to woo hoo! oh yea and im bored.....and i love annoying u :)
when you get rammed up the ass with god-knows-what, and all you knowis that you must scream "WOO HOO!!" at the top of your lungs
We heard the telltale "WOO HOO!!" from around the corner, and knew that yet another freshman had been backdoor banged by some queer upperclassman with a foreign object. The sick bastards!!