A Riddle

A conversation in the car this morning on the way to school .. .. .. inspired by the lame jokes being told on the morning radio show

Angus: Mum, Do you want to hear a dirty Joke?

Me: Okay

Angus: A boy fell in some mud. Do you want to hear a clean joke?

Me:Okay

Angus: He had a bath. Do you want to hear another dirty joke?

Me: Sure

Angus: He fell in the mud again