I am not biologically related to my sister but we grew up together. I have a fetish thing that drives me crazy. Co-incidentally (maybe?) she would do this thing when we were young. Yet, today, in addition to a sexual dead end thought, I would feel the full effect of Westermarck if I ever even thought of a fetish with her. I don't know why. Sex is so strange for me. It's mind boggling to know that I was able to help create a couple of kids.

Sometimes I wish I were gay or a rapist or even a flasher just to be able to categorize myself. I have no idea what the hell I am. (Other than an old heterosexual petal file.)

Getting back to your post's point, JackSummer, one day my 10 year old son and our neighbor's 10 year old daughter that I was choking back my heart attack over, were in my home, in my bed, alone with each other.... and I walked in. Most of their clothing was still appropriately positioned on each young body, but you could clearly tell that the process had just begun.

"Oh... sorry. Uh...." and I was speechless and considering yelling at my son. NOT because of with whom he was laying beside but because it wasn't me laying there with her instead. Confused at my mental lockup, I just closed the door quietly and went outside... in the hated summer heat... until Little Miss Goddess stepped outside a moment later and headed home. She stopped momentarily to glance at me as I looked up. I just smiled. But I swear on a stack of pancakes that I hadn't given my son a second's thought via any anti-sexual thinking. I was frickin' jealous.