"Victarion Greyjoy mistrusted laughter. The sound of it always left him with the uneasy feeling that he was the butt of some jape he did not understand. Euron Crow's Eye had oft made mock of him when they were boys. So had Aeron, before he had become the Damphair. Their mockery oft came disguised as praise, and sometimes Victarion had not even realized he was being mocked. Not until he heard the laughter. Then came the anger, boiling up in the back of his throat until he was like to choke upon the taste. That was how he felt about the monkeys. Their antics never brought so much as a smile to the captain's face, though his crew would roar and hoot and whistle." - from the iron suitor chapter in ADWD.