So what???

This is fitting for my mood...

A LITTLE 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 SITTING ON THE TOILET READING A
BOOK. BUT ABOUT EVERY 10 SECONDS OR SO HE PUTS
THE BOOK DOWN, GRIPS ONTO TO THE TOILET SEAT
WITH HIS LEFT HAND AND HITS 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."