Posh One Share definition Flag The act in which a boy has a posh wank (wanking with a condom on) Leon: What you at when you get home mate?Danny: Dunno mate, probs gonna go have a posh one Posh One by Dyaaar December 12, 2009 0 0 Get merch Get the Posh One mug. Buy Now — $32.95 See more merch