Flat....Out!

A little boy walks into his parents bedrooom to see his mum on top of his dad bouncing up and down.The mother sees her son and quickly dismounts,worried about what her son has seen she dress's quickly and goes to find him.

The son sees his mother and asks' "What were you and dad doing?"The mother replies "Well you know your dad has a big tummy and sometimes I have to get on top of it to help flatten it.

"You're wasting your time."say's the boy

"Why is that?" asks his mum,puzzled.

"Well when you go shopping the lady next door comes over and gets on her knees and blows it right back up."

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Johnno