rimglmao Share definition Flag rimglmao/RIMGLMAO is a slang word acronym for "Rolling in my Grave Laughing my Ass off". "When I saw how Teru Mikami from Death Note killed his victims I was already rimglmao" rimglmao by RayIlliasMarcoDavidAlfred January 7, 2019 0 0 Get merch Get the rimglmao mug. Buy Now — $32.95 See more merch