Y'know boo boo, what if you're not really full of different sexual fetishes, and you just really like sex? What if somehow anything that could be vaguely related to sex turns you on because it's related to sex?
For instance, you see a hole in a tree that sorta looks like a vag. You get turned on. Well, maybe you wouldn't have a tree-humping fetish, but just a brain occupied by sex.
I'm not trying to Dr. Phil you up or anything (pun intended) but maybe you're quite normal after all? Well... more normal than you think.