Normal everyday Wendie Gone Feral behaviour. It's one step up from kicking ass and one rung below kicking mother fucking ass (aka Sam L Jackson level Kick Ass)
A phrase in which is used when you have absolute no comeback when angered or annoyed at another person. This phrase makes the person who uses it look completely stupid, sounding like the person is referring to anal sex, when their only trying to insult. One of the worst comebacks in historical time.