Who said "That little yellow menace thinks he's so clever!"?

This quote is attributed to Sylvester.

That little yellow menace thinks he's so clever! - Sylvester

"That little yellow menace thinks he's so clever!"

Sylvester Humor

"Sufferin' succotash!"

"That's all, folks!"

"I'm a-gonna get you yet, you wascally wabbit!"

"Thufferin' thuccotash, that wabbit makes me so mad!"

"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."