Top Definition
The practice of relieving oneself of semen into a condom (see posh-wank), while in a public (normally road-side) toilet, then leaving the offending article for someone else to drink in the style of the popular fromage-frais product as alluded to in the title of this activity. Popular in the undergraound gay community of Oxford.
"Robbie enjoyed frubin'in the loo's near Wheatley before leaving a frube for his mate Danny who was expected soon"
by The Convenience Store Kid April 23, 2009

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