Little Tommy hears noises coming from his Mom's and Dad's room every nite so he goes to take a peek in their room to see what they are doing.

After a couple of days of doing this little Tommy askes his Mom, "Mommy, sometimes at nite I hear noises coming from your room and I peek and I see you jumping up and down on Daddy's tummy. Why do you do that?"

"Well," Mom says "That is so that I can make Daddy skinny."

"Mommy, but you're wasting your time doing that," says little Tommy, "because after you leave for work every morning, the lady from next door comes into your room with Daddy and blows him back up."