Who said "Now that's a real knee-slapper!"?

This quote is attributed to Foghorn Leghorn.

Now that's a real knee-slapper! - Foghorn Leghorn

"Now that's a real knee-slapper!"

Foghorn Leghorn Humor

"I say, I say, son, you're gonna have to speak up, I'm wearing a clothespin on my nose!"

"That rooster is nuttier than a pecan pie in a squirrel's pocket!"

"Now listen here, boy, I'm gonna tell you something, and you better listen good!"

"I've been around the block more times than a mail truck!"

"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."