sgt.pumpass (sergeant pumpass) Share definition Flag 1.One who acts stupid. 2. One who acts extremely homosexual. Who's Sgt. pumpass over there? Shut up sgt.pumpass! sgt.pumpass (sergeant pumpass) by matt November 4, 2003 0 0 Get merch Get the sgt.pumpass (sergeant pumpass) mug. Buy Now — $32.95 See more merch