On Christmas Day, when Tesla CHIEF EXECUTIVE OFFICER Elon Musk impersonated a slim Santa Claus on X, he offered an unparalleled public account to the anti-obesity medicines Mounjaro and Ozempic with one remark. âLike Cocaine Bear, but Santa and Ozempic,â he claimed, including, âTechnically, Mounjaro, but that does not have the same ring to it.â