Fatspital Share definition Flag Slang for special bariatric hospitals opening now to accomodate the 500-1500lb patient. It took 8 firemen to carry this tubbo. He was too big for ER tables, so we had to hit the fatspital. Fatspital by BrainSpew March 2, 2010 0 0 Get merch Get the Fatspital mug. Buy Now — $32.95 See more merch