Who said "I'm rubber, so your attacks won't work on me!"?

This quote is attributed to Luffy.

I'm rubber, so your attacks won't work on me! - Luffy

"I'm rubber, so your attacks won't work on me!"

Luffy Humor

"I'm gonna be King of the Pirates!"

"A man's dream will never die!"

"I don't care what happens to me, I'm gonna help my friend!"

"Being alone is better than being with the wrong people."

"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."