Who said "I'm not saying I'm a genius, but I've never been proven wrong."?

This quote is attributed to Peter Griffin.

I'm not saying I'm a genius, but I've never been proven wron... - Peter Griffin

"I'm not saying I'm a genius, but I've never been proven wrong."

Peter Griffin Humor

"Shut up, Meg."

"All right, all right, I'm coming, Elizabeth."

"Giggity!"

"You know what really grinds my gears?"

"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."