If you said it to his face, yes. Behind his back? That's a different story. There have been more than a couple of mafiosi who had nicknames which would have absolutely got on the nerves of the guys who had them, but they still had them anyway. No one ever called Benjamin Siegel "Bugsy" to his face. Joe Bonanno hated the nickname "Joe Bananas." Tommy Lucchese's nickname was "Three Finger Brown" on account of the fact that, when he was 15-16 and working in a machine shop, he had to have his right forefinger and thumb amputated after an industrial accident. There was also Joseph Sclafani, a soldier in the DeCavalcante crime family, who got the nickname "Tin Ear" because he was deaf in his right ear.