PoS3 Share definition Flag Piece of Shit 3, a popular derogatory term used to describe how shitty the PlayStation 3 (PS3) is. No AAAE's in over a year, LMAO PoS3 PoS3 by ScaryMovies January 22, 2008 0 0 Get merch Get the PoS3 mug. Buy Now — $32.95 See more merch
