Ghetto Posh Wank Share definition Flag To masturbate wearing an opened plastic sandwich bag instead of condom. Hence, no messy clean up and less expensive especially with coupons and sales. Money is tight right now so I had to ghetto posh wank instead of buying condoms. Ghetto Posh Wank by Jack off 24 January 5, 2010 Get the Ghetto Posh Wank mug.