Me? I never beat anyone up, I punched a few as a kid, didnt we all?
But grew out of it, I had nothing to prove.
Depends how you class kid. The only real fights I have ever been in were before I was able to throw a real punch. However since then I do Krav Maga and Kickboxing in mixed classes where sparring partners are assigned on ability as opposed to gender. I'd wager there's 1 woman in the kickboxing class who would annihilate most of the guys in this thread. A couple in the Krav Maga class who would do more damage to them than they think women are capable of.