Dude, uncool. Share definition Flag Famous phrase that is used in OverSimplified. Usually used when one is offended by another. me: *presenting a project* that one guy in the back: *laughing* me: dude, uncool. Dude, uncool. by SpicyHamsandwich January 19, 2023 0 0 Get merch Get the Dude, uncool. mug. Buy Now — $32.95 See more merch