d.t.f. Share definition Flag down to fuck trying to hook up, and/or have sex. drunk stephen: yo boo, d.t.f.? random girl: d.t.f.? drunk stephen: yeah boo, you down to fuck? d.t.f. by stephen wainwright March 20, 2008 0 0 Get merch Get the d.t.f. mug. Buy Now — $32.95 See more merch