It amuses me a great deal. There is something a great deal funnier about a guy being raped than a woman being raped, especially because he was fed viagra and mounted; if he were sodomized it would be a different matter.
An individual was held against their will, raped against their will, and, reasoning from the fact they went straight to the police after the whole ordeal, psychologicall injured and humiliated; what's so funny about that? The fact that he's male and was only raped through genetial means doesn't mean shit if he was still abused without any consent on his part. If he were sodomized it would only be a worse matter; of the same equalness to a woman being sodomized by a man.
What the fuck? I mean I can understand a little vigilante justice being used to teach a theif a thing or two about their wrongful actions, but kidnapping and rape? I mean shit, if the individuals in question were switched, with a male store owner and female robber, then thered be serious moral outrage from the local community demanding the rapists blood, yet some people view the act of a woman raping a man as funny? That's sexism. Rape is rape regardless of the victim, or rape isn't a serious offense on the part of the victim; it can't work one way for one gender and another way for the other.
Granted, I'd worry more for the robbers social reputation; sure he'll probably get less jail time than woman, but the gus in jail are going to know that he was raped by a women, ensuring a complete loss of credibility and possibly social ostracism (read: he's gonna get beat up and raped). Actually in that respect, one could almost view the three days of rape as a punishment not much worse then prison, where someone id held against their will and raped by another individual; only difference is that his ordeal lasted three days while conviction of robbing a store can get someone ten years.