The G.A.S.H. Share definition Flag a woman with gonorrhea, aids, syphillis, and herpes Mikey, that girl's got The G.A.S.H. She's gonna get real fat eatin' all them pizza and pancakes. The G.A.S.H. by Tom Jesus September 23, 2005 0 0 Get merch Get the The G.A.S.H. mug. Buy Now — $32.95 See more merch