people who seek to place restraints on humor obviously don't understand it in the first place. if a racist or sexual joke offends you, maybe you should look to yourself and ask why you are so sensitive, rather than try and criticize others for making a harmless joke!
What about in the workplace FF??
Random Poster:"I'm sorry I didn't go to an Ivy-league school like you"
"Ah I actually I didn't. It's a nickname the feds gave the Genovese Family."