Who said "I'm sorry. That's the one thing I never say."?

This quote is attributed to Iron Man (The Avengers).

I'm sorry. That's the one thing I never say. - Iron Man (The Avengers)

"I'm sorry. That's the one thing I never say."

Iron Man (The Avengers) Humor

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

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

"I've successfully privatized world peace."

"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."