Who said "The key to a great practical joke is confidence."?

This quote is attributed to Bart Simpson.

The key to a great practical joke is confidence. - Bart Simpson

"The key to a great practical joke is confidence."

Bart Simpson Creativity

"Eat my shorts!"

"Ay caramba!"

"Don't have a cow, man."

"Cowabunga!"

"When life gives you lemons, make something beautiful."

"Creativity knows no bounds."

"Creativity is the expression of the soul."

"I'm making this up as I go."