I wouldn't piss on him if he was on fire Share definition Flag phrase describing a male person that you extremely dislike My boss is a real asshole. I wouldn't piss on him if he was on fire. I wouldn't piss on him if he was on fire by Studly Hungwell November 8, 2008 0 0 Get merch Get the I wouldn't piss on him if he was on fire mug. Buy Now — $32.95 See more merch