I was at a Neon Indian show in a small venue and kept getting groped. I finally punched a guy in the balls who grabbed my crotch. My. Crotch. He was carried out of the building and I'm not even sorry.

I've trained in Krav Maga for over 10 years. We encourage groin kicks (and knees, slaps, elbows, and pretty much every other kind of strike you can imagine). Here's what I've learned for a straight kick:

I was once grabbed from behind at a show at a bar and dragged towards a door as I was standing in the back looking for my friends. Without thinking at all I spun around, grabbed a handful of his hair and yanked his head down into my rising knee. I broke his nose and fractured his eye socket I hit him so hard. I have…

My Krav Maga course was basically "...and then the balls, for good measure" 101. My RAD training also emphasized balls, but not with the fervor of Krav Maga, which if I remember correctly, is precisely WHY it's not considered an official martial art. They also taught me a move for getting out of a choking situation…

My sister used to sneak up and kick me in the balls and then while I writhed in agony, she'd ask, "Did that hurt?" Her idea of a joke. Seriously, I come from a fucked up family. Now we laugh about it, but I am still watching her every move.

Also: whatever else you do, be quick and decisive, do your damage, and then get the fuck out of there.