Who said "Happiness is just sadness with better PR."?

This quote is attributed to Nelson Muntz.

Happiness is just sadness with better PR. - Nelson Muntz

"Happiness is just sadness with better PR."

Nelson Muntz Happiness

"Ha-ha!"

"Your tears of unfathomable sadness!"

"I'm gonna enjoy this, Bart. I'm gonna enjoy this a lot."

"Eat my shorts, Simpson!"

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."