Gass Sandwhich Share definition Flag The Gass Sandwhich is the Indy Double Whooper at Burger King. Damn i'm hungry, lets all go get a Gass Sandwhich from BK. Gass Sandwhich by RoyChampion August 11, 2008 0 0 Get merch Get the Gass Sandwhich mug. Buy Now — $32.95 See more merch