THREE YEAR OLD BOY IS SITTING ON THE TOILET.

HIS MOTHER THINKS HE HAS BEEN IN THERE TOO LONG, SO SHE GOES IN TO SEE WHAT'S UP.
THE LITTLE BOY IS GRIPPING ON TO THE TOILET SEAT WITH HIS LEFT HAND AND
HITTING HIMSELF ON TOP OF THE HEAD WITH HIS RIGHT HAND.
HIS MOTHER SAYS: "BILLY, ARE YOU ALL RIGHT? YOU'VE BEEN IN HERE FOR A WHILE."
BILLY SAYS: "I'M FINE, MOMMY. I JUST HAVEN'T GONE 'DOODY' YET."
MOTHER SAYS: "OK, YOU CAN STAY HERE A FEW MORE MINUTES. BUT, BILLY, WHY ARE YOU HITTING YOURSELF ON THE HEAD?"
BILLY SAYS: "WORKS FOR KETCHUP."