Gmack

A Flat Stomach

A little boy walks into his parents' room to see his
mom on top of his dad bouncing up and down. The mom
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 mom 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 and
help flatten it...'

'Your wasting your time,' said the boy.

'Why is that?' the mom asked puzzled.

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

Jdizzle

10 million versions of that one but still good