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Where a man wears a condom whilst masturbating, as opposed to catching the spunk in a tissue/ something similar. The word 'posh' is used to denote the expense of buying a pack of condoms for such a menial reason (to make the wank more pleasurable).
"I've still got some jonnies left over, I know, I'll have a posh man's wank."
by Tipp-Ex June 16, 2009
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