Once upon a time there were these two bums walking down the railroad tracks, and the first bum, Fred, thought he smelled a nasty old smell. He asked his companion, Jeff, ''Did you s**t your pants?''
''Hell no,'' Jeff said.
They walked a few more miles and the smell got worse. ''Did you s**t your pants, Jeff?''
''I swear to the God almighty I did not s**t my pants,'' Jeff said.
So they walk three more miles and the smell gets just horrible. Fred runs over and pulls down Jeff's pants and says, ''I thought you said you didn't s**t your pants?!''
''I didn't.'' Jeff said. ''They're your pants.''