Curtain Share definition Flag When someone is being an absolute dick. Usually a mess about insult but can be taken seriously . Person 1: oi you stop being a fuckin curtainPerson 2: sorry Curtain by Getmeoffthissite January 8, 2020 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug