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........
