In the, "no-wait, it-gets-weirder" science file, we have the discovery that a bacteria that kills the male members of a butterfly species makes the females more promiscuous. The result? What few males manage to survive are mugged by hordes of horny butterfly sluts, and are forced to mate so many times their sperm production drops.
Well, ok, they didn't actually say, "hordes of horny butterfly sluts," but it would've been a lot funnier if they had.