"So, uh, I've heard you can be pretty intense with girls who get on your bad side... I, uh, I was wondering what it would take to get that kind of experience for a night...?"
"You've heard it, yeah." But more than his actual 'bad side', it's mostly catching him at the wrong moment. Or in this case: Perhaps the best one, depending on what one wants, "If you're looking for that deliberately? You can just say it straight out. And since it seems to be what you want..." That's the moment the expression changes.
"...You can tell anyone you want you won't be available for a couple days in advance. Put on my favorite bikini and come to my room tonight, then I'll make you beg me to stop, and not out of fear." Concluded with a spank that was far harsher than the usual ones, as if giving her but the smallest of previews of his more unrestrained strength she would feel that night, if she was sure of this.
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