NASTY BEARD Share definition Flag an un-groomed beard that looks like pubic hair except on your face; hair growing in all directions ken: hey joan you should trim your nasty beard joan: idk i like seeing my pubs after i wash my face NASTY BEARD by the informaddsds4 September 18, 2013 0 0 Get merch Get the NASTY BEARD mug. Buy Now — $32.95 See more merch