A neutron walks into a bar, sits down, and asks the bartender "Hey, how much for a beer?"
The bartender says, "For you? No charge."
Q: Was Adam the first man?
A: That's what Eve told him.
A blonde walks up to the counter and says: "I'd like a cheeseburger, fries, and a Diet Coke." The man behind the counter says "Blondie! Look around, this is a LIBRARY!" "Oh, how silly of me." says the blonde. She then begins whispering "I'd like a cheeseburger, fries, and a Diet Coke."
Two nuns are riding their bicycles to church and are forced to take a detour through an old, little used street. "I've never come this way before," says the first nun. The other replies, "It's probably the cobblestones."
(More available at http://www.publicradio.org/applications/formbuilder/projects/joke_machine/joke_page.php )