(no subject)

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."
"You're 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."