I like certain kinds of pain
If I have a bruise and accidently bang it, I will say "Ow" even though it doesn't actually hurt. But if I push down on it, I think it hurts just a bit for a moment but then I quite like it. It's not a sexual pleasure or anything, not at all, but it is, in a way, comfortable.
I don't think this is very serious and probably will not do me any harm. If I have a scab I will probably pick it because I have a habit of doing that, but that brings a kind of pain I don't like. Sometimes my nose (particularly after a big nosebleed) gets a lot of dry blood, or bogies, in it *laugh* and if they're hard *laugh* I'll push the side of my nose because I kind of like it. Personally I think it's a bit strange, but surely this isn't masochistic?