I have these two bumps on my ass, and one's about the size of a zit and the other one is kinda big (think like giant zit). I tried popping them but nothing happened, I scrubbed it with acne wash and it kinda hurt, what the fuck are these things? I've got a skinny ass, like real skinny ass, and I've been sitting down a lot lately on my hard wood chair, is my ass irritated? I'm going to the health clinic soon because it's kinda freaking me out.

Any idea as to why I have bumps on my ass?