quaff a stein Share definition Flag (verb) to raise a chorus to ol’ Phi Delta Theta by consuming egregious amounts of alcohol. Come, let us quaff a stein to ol’ Phi Delta Theta. quaff a stein by Keaton Jones' Mom April 3, 2023 0 0 Get merch Get the quaff a stein mug. Buy Now — $32.95 See more merch