UT Fire Extinguisher Share definition Flag n. Urinary tract fire extinguisher; antibiotics. It burns when I pee.Dude, see your doctor. You need a UT fire extinguisher. UT Fire Extinguisher by Cranky Neighbor July 18, 2010 0 0 Get merch Get the UT Fire Extinguisher mug. Buy Now — $32.95 See more merch