Who said "Even monster can laugh. Especially monster can laugh."?

This quote is attributed to Hulk.

Even monster can laugh. Especially monster can laugh. - Hulk

"Even monster can laugh. Especially monster can laugh."

Hulk Humor

"Hulk is strongest one there is."

"Don't make me angry. You wouldn't like me when I'm angry."

"Puny god."

"Hulk smash!"

"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."