Who said "I'd tell you to smile, but you'd look like you were in pain."?

This quote is attributed to Tony Stark / Iron Man.

I'd tell you to smile, but you'd look like you were in pain. - Tony Stark / Iron Man

"I'd tell you to smile, but you'd look like you were in pain."

Tony Stark / Iron Man Humor

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

"If you're nothing without the suit, then you shouldn't have it."

"The difference between you and me? I'm not afraid."

"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."