His two most commonly known nicknames were "The Camel" and "The Hump". It has been suggested that the nickname, "The Camel", derived from his preference for wearing camel hair coats; however, a more likely explanation is that "The Camel," evolved from his other nickname, "The Hump", derived from his surname. The names given to him by his friends, however, were more revealing: "Mr. Einstein", "The Brainy Hood" and "Mr. Moneybags".