Who said "Let's put a smile on that face."?

This quote is attributed to Joker.

Let's put a smile on that face. - Joker

"Let's put a smile on that face."

Joker Humor

"Everything burns."

"Do you want to know the funny thing about all your big plans? They don't matter."

"The only sensible way to live in this world is without rules."

"Madness is like gravity - all it takes is a little push."

"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."