dass tuff Share definition Flag used to describe something really troubling and you dont want to help.or it can just be used to end a conversation. sap nigga:yo my girl just left me dawg.im so sad me:yo dass tuff.it be like that sometimes. dass tuff by TheFakeYoshii September 9, 2018 0 0 Get merch Get the dass tuff mug. Buy Now — $32.95 See more merch