Pos Party Share definition Flag Where a bunch of HIV POSitive people (gimps and the like) get together and have a glorious orgy timmy: wow, i went to a great orgy last night george: dewd, that was a pos party! Pos Party by Danielfman July 14, 2006 0 0 Get merch Get the Pos Party mug. Buy Now — $32.95 See more merch