Bob goes into the public toilet and sees this guy standing next to the urinal. The guy has no arms and as Bob's standing there, taking care of buisness, he wonders to himself how the poor wretch is going to take a leak. He finishes and starts to leave when the man asks him for help.

Being a kind soul, Bob says, "Okay sure, I'll help you."
The man asks, "Can you pull it out for me?"
Bob pulls it out and it has all kinds of mould and red bumps all over it. It's covered with hai clumps, rashes, moles, scabs, scars, and smells awful.

The guy asks Bob to point it for him, which he does.
Bob then shakes it, puts it back in and zips up.
The guy says to him, "Thanks, man, I really appreciate it."
Bob says, "No problem, but i gotta ask, what the hell's wrong with your penis?"

The guy pulls his arms out of his shirt and says, "I have no idea, but I ain't touching it..."