Who said "Humor is fine as long as it's at someone else's expense."?

This quote is attributed to Oscar the Grouch.

Humor is fine as long as it's at someone else's expense. - Oscar the Grouch

"Humor is fine as long as it's at someone else's expense."

Oscar the Grouch Humor

"I love trash. Why do you think I live in a can?"

"Scram! Can't you see I'm trying to be miserable here?"

"The more it stinks, the more I like it."

"Why is everyone always trying to make me happy? It's exhausting."

"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."