Who said "It's funny because it's true."?

This quote is attributed to Barney Gumble.

It's funny because it's true. - Barney Gumble

"It's funny because it's true."

Barney Gumble Humor

"Woo-hoo!"

"To alcohol! The cause of, and solution to, all of life's problems."

"I'm gonna go back to the lab and study some... stuff."

"Barney's my name, drinking's my game."

"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."