DaMayor, Rusty & Albob are in a bar on the top of a cliff. DaMayor says to the other guys "You know, if had just one more beer, I reckon I could fly."
Rusty says "No Way!"
So DaMayor orders a beer and drinks it. Then all three guys walk out to the edge of the cliff. DaMayor jumps off, starts falling to the ground, and then flies gracefully back to the top of the cliff.
Rusty is totally amazed, so he says "You know, if I had another beer, I bet I could do that too."
All three guys go into the bar, and Rusty has one more beer. After he finishes, he says "Ok, I will be able to fly now."
All three of them go outside and Rusty jumps off of the cliff. He falls to the bottom, hitting the ground and dying instantly.
Albob turns to DaMayor and said "You know Superman, you can be a real jerk when you drink."