My fantasies are usually being the dom. I'd want the girl humiliated in some kind of public place, like a laundrymat late at night or a bar's bathroom, with her mouth ductaped, with her fat ass pointed at me. I'd spank her, and keep spanking her until my handprints were all over her ass. Theeennnn, I'd switch to a paddle, then a riding crop. I'd tell her lovingly in her ear to shut the fuck up as her ass got redder and redder, eventually developing beautiful bruises. She wouldn't be able to sit down for days. And she'd be dripping wet with fuck juice the whole time.