Why are nurses and MAs so surprised when you fire back?

Nurses and MAs with attitude, why do get sooo surprised when we finally snap and fire back at their rudeness? Then they proceed to go tell other nurses about how this resident is an absolute asshole for saying such and such, etc. I mean, what the fuck do they expect? You fling shit at me, I'm gonna fling diarrhea at you. Give me a break.