A little boy and a little girl, both about six, are in the sandbox.
Unexpectedly, the little boy farted, causing a little sand between his
legs to shift.

She notices, and squeals with laughter, "How'd you do that," she asks.
"Easy," he exclaimed, "I just farted."

"Can I try it," she asks? "Sure," he says, "anybody can do it." So she

strains, and concentrates, and grunts. Suddenly, there'* a terrible
explosion, the sides of the sandbox fly off, all the sand flies out.
The
little boy rolls up the hill, he finds himself upside down against a
tree. He groggily gets to his feet, runs over to where the little girl
is out cold, flat on her back, spread eagle.

He lifts up her dress, peeks underneath, and loudly exclaims, "Just
what I thought, dual exhaust."

lmao