A little boy walks into his parent's room to see his mum on top of his dad bouncing up and down, and retreats. The mum sees her son and quickly dismounts, worried about what her son has seen; she dresses quickly and goes to find him.
The son sees his mum 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 to flatten it."
"You're wasting your time," say's the boy. "Why is that?" asked his mum puzzled. "Well when you go shopping the lady next door comes over and gets on her knees and blows it back up again."
:lol: 
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