I do too! Thanks.
I understand that to some, having a ladies-only forum might seem unfair, but hey, the men (and boys!) pretty much dominate the rest of the board. If anyone can't understand how we need and appreciate a sexism-free area where we can communicate with each other without being harassed, then they need to take a reality check. While some of the EF guys are wonderfully supportive, many others are meat-head chauvanists who just plain piss me off (and sometimes really creep me out).
Now that that issue is taken care of, I'll respond to the initial question. No, I've never squashed anyone's balls with my bouncing bottom (I think it helps that I tilt my tailbone up and away from those precious and ridiculously fragile jewels), but I have, twice, hurt a penis. Once, when I was a teenager, I reached into my boyfriend's pants to handle his thang, and (I was still wearing my nails long) scratched the poor kid. And one time when my EX-fiance was obnoxiously waving his dick in my face (I mean, if a guy wants to be blown, he should at least ask nicely, right?), I snapped my teeth together evilly, in jest. Well, he didn't pull it away quickly enough, and I nipped the end of it! Boy, did he make a fuss.