Is it normal to be so turned on by watching my mom go black?

I really get off on that. I don't usually like inter-racial porn, but this? Oh yeah. I think it's just the mom forcing her son to watch her. Google image search "wmmgb" with safe search turned off and the first picture on the second row with her body propped up on her "son's" elbow is sooo hot to me. Seach that at your own risk, definitely X rated. So please tell me: IIN?