Proper Piss Off Share definition Flag When something is pathetic and really annoying, so it really really pisses you off on a regular basis. "everytime I get an email through my hotmail, it logs me off my MSN. Its a proper piss off!" Proper Piss Off by *Crumpet* June 25, 2007 0 0 Get merch Get the Proper Piss Off mug. Buy Now — $32.95 See more merch