Ass curtains refers to when an asshole is so worn out from over use as in anal penetration ass curtains develop like roast beef curtains for vaginas.
by Haywood J July 18, 2006
by bratchant May 21, 2015
My buddy brandon did some behind the curtain ass shit when he gave me his shirt with a shit stain on it before we out in public.
by J’Ville Jolter November 18, 2021