In what context did she say that, was it as part of longer interaction or was it out of the blue? I seems that she was externalizing aggression and you that there is only a hair line separating sex and aggression, sometimes that’s the way sexual tension is externalized, think of the little kid in the play ground attracted to the cute little girl, he does not know how to show it and so what he does? a. push her or b. pull her hair. If “kiss my ass” was blurt out of the blue or totally out of context, that is what I think you have here, the combo got to her and surprised her. Your comeback was pure gold, hilariously funny and taking it right back to her (sounds like you wouldn’t mind a piece of this one 
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As for myself, I been off P78 for a couple of days and the level of flirtation has come down a couple of notches, I now realize that P78 does make it really easy to respond to IOI with arousal, puts you in the mood for some loving. I’ve realize this because how easily I regained control of the urges once that molecule was off me; also, most of the ladies went back to normal with one noticeable exception, Fighting Lady.