Two best friends, Sam Frank and Frank Sam, die in a car accident. Frank Sam, having lived a virtuous life, ascends to Heaven while his buddy falls straight to Hell. Some time later, Frank Sam goes to Saint Peter to ask a favor.
"Saint Peter, I know my friend was a bad person, but he was still my friend. I'd like to go see him if I could."
Saint Peter thinks about this. "Very well, I shall grant your request. You have to be back by 10PM, though."
"Thanks!" Frank Sam says and descends into the Pit to visit his buddy.
Sam Frank has set up a nightclub in Hell, just like he had on Earth. He's delighted to see his buddy, and takes him on a tour. They stay out all night, drinking and smoking and watching the dancers. Finally at dawn, Frank Sam yelps, having forgotten Saint Peter's demands, and rushes straight back to Heaven.
Saint Peter is there waiting for him, tapping his foot. "You have any idea what time it is? You've got beer stains on your robe, and your wings are all mussed up and your harp! Where's your harp!"
The man yelps. "Oh, no! I left my harp in Sam Frank's disco!"