unisaurus Share definition Flag a man who is both gay and strong/masculine. they tend to be nice but if you f*ck with him, hell probably beat the shit out of you. hey whoś that guy youre dating? he seems like a unisaurus. unisaurus by FlamingWater October 31, 2017 0 0 Get merch Get the unisaurus mug. Buy Now — $32.95 See more merch