South End Buttery Share definition Flag licking butter off someone's buttie-hole always boy on boy he took a bagel, rubbed it butter-side-down on his boyfriends butt and then gave him the south end buttery South End Buttery by Allie Mac April 3, 2009 0 0 Get merch Get the South End Buttery mug. Buy Now — $32.95 See more merch