A six year old walks into the kitchen where his
mom is preparing a meal...

"Mom, the last few nights I have woke up to this
thumping noise coming out of your bedroom and when I look to see what it
is, you are sitting on top of dad and bouncing up and down. Why are
you doing that?"

The startled mother quickly recovers and
says, "Your dad is a little
overweight and I am trying to get him back to
normal size. I bounce on him
to get all the air out of him."

The little
kid just shakes his head and
says "Mom your wasting your time."

The mother says "Why is that dear?"

The kid
says, "Because, once a week,
that nice looking lady next door comes over
and blows daddy right back up!"