What is Minesweeping?
1.
The act of stealing, appropriating, or simply picking up an unattended drink, with the intention of aquiring it as your own.
I couldn't afford a drink so I scouted out the club and went minesweeping - I came back with two pints and a glass of something purple, with an octopus in it! Drank it anyway.
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2.
A fairly despicable habit originating in student bars in the UK. After the bar is shut, but while people are still in the venue, the more desperate alcoholic will go round collecting any half-full abandoned drinks he can find, and neck them without anybody noticing. The more drunk you get, the more likely it will be that you drink out of a glass that someone's used as an ashtray. Another possibly hazard is
Tom: Hey buddy where d'you get those drinks from -the bar shut half an hour ago?
Dick: Oh I just went minesweeping round those tables at the back.
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3.
A reverse of the " Wing Man" theory whereby, one friend goes for the hot chick to distract her, so the other friend can work his charm on the not so hot but attainable girl of the pair.
My friend got ass got last night due to my minesweeping.