Slug to the mug Share definition Flag To get shot in the face with the preferred 9 milimeter or .45 round thug style Swizzy Beatz in Untouchable Remix: Slug in a n*****'s mug, thug reppin midwest side..... etcetera etcetera. Slug to the mug. Slug to the mug by ThugDefs July 16, 2011 0 0 Get merch Get the Slug to the mug mug. Buy Now — $32.95 See more merch