He lied about the butcher's boy and made Father kill my wolf. After being poisoned at his wedding feast he incorrectly assumed that it was Tyrion's doing. Joffrey laughs when Tyrion is Game of thrones joffrey to cloak her. Because of this he preferred tormenting animals rather than fighting warriors and regularly went on hunts because of this akin to Robert, Game of thrones joffrey at least the latter was legitimately skilled at fighting men. He was only a child himself. Moreover, his father-figure King Robert was largely absent from his life and a terrible role-model, with his constant drinking and whoring though Robert, at least, lamented on his deathbed that he hadn't been a good father.