Who said "The best jokes are the ones that sell merchandise!"?

This quote is attributed to Krusty the Clown.

The best jokes are the ones that sell merchandise! - Krusty the Clown

"The best jokes are the ones that sell merchandise!"

Krusty the Clown Humor

"Hey hey! Remember, kid, life is like a circus - chaotic, unpredictable, and somebody's always getting hurt!"

"Love? That's for people who don't have enough money to keep themselves entertained!"

"The wisest thing I ever learned was how to count money faster than the IRS."

"Happiness is a warm gun... or in my case, a warm briefcase full of cash!"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."