Why do I want to see that so bad? Glints of the mouse running around from Mr Garrison with a penis on its back...

blood infection caused his penis to decay

I suspect he was one of those freaks injecting cocaine or heroin or whatever into veins in his penis with a dirty needle that caused the infection. Story leaves that part out.

Looks like those troon experiments are good for something.

Props onto him for not offing his self.