One day George W. Bush and Dick Cheney walk into a diner. A waitress walks up to them and asks if she can take their order. Bush leans close to her and says, "Honey, can I have a quickie?" The waitress is appalled and yells at the President about women's rights and storms away. Cheney then says to Bush, "George, its pronounced 'quiche'."
I hate to admit it but some of those are pretty funny.... Why did the monkey fall out of the tree? Because it was dead. (this is the only joke I know, sadly)
Here's probably the worst joke I've heard, my dad told me not long ago... My dad was checking out books at a library. The librarian smirked and said.. "My, you must have really wanted these books..." Dad: "Hunh?" Librarian: "I mean, you came allll the way over here!" Dad: "...." My dad was wearing a Hawaiian shirt, you see... ha, ha