Who said "How can you have any pudding if you don't eat your meat?"?

This quote is attributed to Charlie Brown.

How can you have any pudding if you don't eat your meat? - Charlie Brown

"How can you have any pudding if you don't eat your meat?"

Charlie Brown Humor

"Good grief!"

"I got a rock."

"Rats! I did it again."

"Why is it that everything I do turns into a disaster?"

"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."