day after drinking Share definition Flag Abbreviated d.a.d. these shits are the worst. Simply a day after drinking shit. Dude last night I drank so muck Miller and now I can feel a d.a.d. coming on. Fuck Day after drinking shits day after drinking by kidwhodrinks May 11, 2014 0 0 Get merch Get the day after drinking mug. Buy Now — $32.95 See more merch