McGrath, thank you!
Sondra, all I was saying was that senses of humor are not always easy to fathom. There are ethnic people who are amused by certain types of ethnic humor, and others who are offended by it. You have every right to be offended, but I think it goes a little far to have your opinion of someone plummet because your sense of humor doesn't agree with theirs. As a Jewish person, I would not immediately judge and condemn another Jew who told a Jewish joke, even if I didn't like the joke.
Besides this, there are other explanations for the cover art, as I and others have pointed out, that have nothing at all to do with disability but with Nic's situation vis a vis recordings. Indeed, the practice of holding on to the rights of an artist's recordings and not allowing them to release records is often referred to by musicians as "burying" the artist. I just don't think disability was foremost in anyone's mind when the gross joke was thought up.
Sorry if I'm beating a dead horse, folks, but I really think the joke is being misunderstood, and that is at the basis of the offense.