Sometimes, Only 'Bad' Will Do

Ok, apart from the usual, clit rubbing, fingering, ass fingering and the well aimed jet from the hot tub, what really does it for me is what I am thinking about. Sometimes, (I guess it depends on where I am in my cycle) I like to think about being romantically seduced, but at others, only something nasty will do. Like I think about getting raped but enjoying it. (Weird coz I would fight like FUCK if any asshole tried that with me) but sometimes, I fantasize about my family. I once masturbated in my brothers bed imagining him jacking off in it, and likewise, in my parent's bed thinking of the noises my dad makes my mom make some nights and if he was doing me. I guess the worst thing I did was went to my sisters room and found her vibe. I used it on and in myself while I licked out her panties. (I was going through a bi curious phase at the time)
I know my kid brother sometimes jacks off and I know he sometimes uses my panties too coz I found them crumpled up and sticky with his jizz. That really turns me on too. Not that I want to fuck him or anything, just that my body makes him cum. OK, I guess sometimes, I have thought about him shooting his jizz in me. As I said, sometimes, only 'bad' will do. Well, (sigh) this has gotten me all worked up. I guess I will go find that vibe again.

Does anyone else have fantasies like this or is it just sick ol me?