When you're all horned up, the most ridiculous things sound incredibly hot. Stuff like "Yeah, you know how to eat good ass!" (repeated about ten times) pops up in porn, at least the stuff I watch. They're utterly ridiculous and, if spoken in a normal conversation, totally scoff-worthy. But get your hormones up and they really don't bug you. In fact, they get you even hotter. It's really weird.
So, maybe "Imma beat that pussy up" really does work!