Who said "What did you expect, gratitude?"?

This quote is attributed to Theon Greyjoy.

What did you expect, gratitude? - Theon Greyjoy

"What did you expect, gratitude?"

Theon Greyjoy Humor

"I am the Prince of Winterfell. I have no need to prove myself to anyone."

"What is dead may never die."

"You can't marry her. You're promised to me."

"I'm a Greyjoy. We do not sow."

"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."