Domme online. It grosses me out and makes me feel dirty when people try to dom me who I don't know.
In real life, I get really bothered when people try to dom me, but if I'm in a relationship, I'll top from the bottom or I'll get aggressive and start getting physical(slapping, spitting, etc). I peg my bf a lot. I lock him in a chastity and "make" him do humiliating things to get out. He loves rape fantasies and such, but because that has been a reality for me I can't do them. He's cool with that though so we compromise with weird shit and him being the "rape-ee"(?) Our sex life started out really rocky, but as we have gotten to know each other more, open up more, and bring more freaky things into the bedroom I think we're both really happy now.
I'm very dominant in my real life. I like to go where I like, I like being in charge, I have held management positions, and I honestly like that in bed too. I'm very strong willed and like to be in charge everywhere.
Edit: Unless there are sweet head pettings going on. Then I turn into a teddy bear who just wants to be treated all vanilla-subish like and being told how much you love me and that I'm pretty.