Telling a guy you are mad at that you are going to get him pregnant--the ultimate act of love, some might argue--is telling him that you are pretty certain that a very intimate moment with him (in this case, um, a fighting moment?) would make you orgasm. And the ultimate impossibility of impregnating a man (thru his ass???) only tells the guy that you are really willing to give it your all sexually for a very, very long time, against all odds. It is at this point that it ceases to be an insult and more a sketchy, unrequited love thing, commonly found in letters written by nine year-old boys to Alyssa Milano circa 1987.