Who said "Are you grinning from ear to ear?"?

This quote is attributed to Cheshire Cat.

Are you grinning from ear to ear? - Cheshire Cat

"Are you grinning from ear to ear?"

Cheshire Cat Humor

Character in Alice's Adventures in Wonderland

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"We're all mad here. I'm mad. You're mad."

"If you don't know where you're going, any road will take you there."

"That's funny."

"We're all mad here. I'm mad. You're 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."