...I think of this joke:
James and Sanfran were best buddies, but when they died, James went to heaven and Sanfran went to hell. But there was a telephone line between heaven and hell, so Sanfran decided to give his old friend James a call.
"How's it doing? How's heaven?" he asks.
"Well, it's not really what I'd hoped," confesses James. "We have to sit on our clouds playing our harps all night. Every morning we have to take all the stars out of the sky and polish them, and put them all back before nightfall. Quite boring, really. What's hell like?"
"Oh it's fantastic!" enthuses Sanfran. "We've got everything you could want -- drink, drugs, discos, loose women -- they're all down here! I've never had such a brilliant time!"
Later that day, God notices than James is looking a bit sad. He asks him what the matter is.
"I was wondering if I could see Sanfran. I mean, we were best buddies and all, and I'd really like to see him."
"Well," says God, "we can fix it up for you to go to hell for one day, but you must take your harp with you."
So James goes to hell for a day, and has a great time living it up with Sanfran. The following day he returns to heaven, and is met by God.
"Well, is everything all right?" he asks.
"Oh, it was brilliant! Discos, drink, women, drugs..."
"Yes, yes, yes," says God, slightly irritated. Then he seems to notice something. "James?" he says.
"Haven't you forgotten something?"
James thinks for a minute, then suddenly realises what God is referring to.
"Oh no!" he exclaims. "I left my harp in Sanfran's disco..."