"Mummy, mummy, there's a man at the door with a bill". "Don't be silly dear, it must be a duck with a hat on".
I was in the pub with a mate yesterday, I finished my drink and said "your round" He said "And so are you, you fat sod"
Went to the shops today to buy some vegetables and the greengrocer had a lettuce poking out of his backside so I said to him 'What's that lettuce stuck up your backside for' he replied 'That's only the tip of the Iceberg'.