How does every black joke start?
By looking over your shoulder!
A friend of mine was complaining that there's no real comedic merit to sick jokes; that there's too much reliance on a relatively offensive or risqué punchline.
Anyway, we argued about it for a while and then I raped her.
This joke is like a rapist. It's going to score whether you like it or not.
Have you heard the joke about my penis?
I won't bother telling you, it's too long.
Sometimes I try to masturbate long words into my jokes, even if I don't know what they mean.