Before ALL of that, woot was a happy noise made by certain Monkees and Guinea Pigs when they are happy or content. Net nerds like to take credit for creating stuff that they only adopted. But I know better. I've heard those monkets. And they're happy. woot.
Kristy walks in the door from a long day of work and her Guinea Pig, thrilled to see her, asks "Woot? Woot woot? Woot."
1) i gotta a lotta balls
2) big-ass purple swollen testes in really tight pants. far more pleasureable when used as a peanut bag for boxing practice. also makes a wonderful place to keep your pet newt.