sdlm Share definition Flag Noun. Slang. Stupid dumb lazy motherfucker. Someone who is dumb and lazy at the same time. I told you to take out the trash! I don’t want to! You’re a sdlm! Wym? Stupid dumb lazy motherfucker! Someone who is dumb and lazy at the same time. FUCK YOU! sdlm by B-rizzle July 5, 2019 0 0 Get merch Get the sdlm mug. Buy Now — $32.95 See more merch