So, my last flame point Rocky used to mount my female cat Miranda, in spite of the fact that he was not only neutered but had a p/u (basically, penile amputation to widen the urethra because of chronice urinary blockage). I tried to laugh it off, but assumed it was because I got Rocky as an adult and he just retained the hope that someday...
I got Aggie in April 2007 (MN at the age of about 4 mos) several weeks after Rocky was euthanized, and then Beanie came as a foster in summer 2007 (neutered at 10-12wks, currently about 8 mos old) and just ended up being sick all the time and then he just stayed. Well, one day I heard that familiar little chirp and, to my horror, when I looked over, Aggie was "courting" Beanie and even mounting him. I know neutering doesn't erase all testosterone in their bodies, but couldn't it, just this once?!
What if I feed them saltpetre or corn flakes?
My little pervert & his boy toy: