I can’t think how to phrase this question adequately…?

Question

When you are having sexual relations with a woman, and she is assuming the “cowgirl” or “doggy” position – where does the irresistible urge to slap her rear end come from? Why do we do that ? Is it emulating something we might have seen before or is it an instinctual thing?

Insight please.

Answer 1

dominance.. stimulates s*x. remember the movie? the slap on the toosh is followed by "who's your daddy?"

Answer 2

lol its just there isnt it??? like the pimple on your nose that youve just gotta squeeze!! or the last chocolate in the box that you just cant leave!!!