The act of pooping and thowing up at the same time. It usually happens when one isn't able to effectively smoke a powerful joint. This is known as the ''Utimate Form of Vacilating''.
(ˈkeɪvˌmæn ing) - {Verb} - The act of "cavemaning" means to light a cigarette or marijuana cigarette with an already lit cigarette or marijuana cigarette.
Guy 1: "Fuck I only got matches and theres 1 left."
Guy 2: "I'll just caveman it Nigga."
Guy 1: "Good shit, thank god for cavemaning."