posh wank
noun
1
an act of male masturbation while the penis is sheathed in a condom. Combines POSH (upper-class) with WANK (to masturbate) UK, 1999.
2
used as abuse of a contemptible person, especially one you consider to be of a superior status. A combination of POSH (upper-class) with WANK (an act of masturbation); informed by contemporaneous 'posh wank' (the act of masturbation in a condom) UK, 1999