One night a little girl walked in on her parents having sex.
The mother was on top, and going up and down on the father. When she sees her daughter looking at them she immediately stops.
“What are you doing, Mommy?” asked the little girl.
Too embarrassed to tell her little girl about sex, the mother made up an answer, “Well, sweetie, sometimes daddy’s tummy gets too big so I have to jump up and down on it to flatten it out.”
The little girl replied, “Well, mommy you really shouldn’t bother with that.”
The confused mother asked, “Why do you say that sweetheart?”
The little girl explained, “Because every time you leave in the morning, the lady next door comes over and blows it back up.”