Paddy gets off the ferry at Liverpool and jumps in a cab.
Cab driver says, "I've got a riddle for ya." He continues, "brothers or sisters have I none, but that man's father is my grandfather's son. Who is it?"
"I'm sorry," says Paddy, "I'm no good at riddles, you'll have to tell me."
"Okay," says the cab driver, "it's me."
"Oh right" says Paddy, "I'll have to remember that one."
Paddy arrives at his friends house and says, "hey Dave, I've got a great riddle for ya!" He continues, "brothers or sisters have I none, but that man's father is my grandfather's son. Who is it?"
"Well, it's you" says Dave.
"No it's not," says Paddy,