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1. A technique used by defenders to put attacking players in an offside position, by moving quickly away from their own goal to leave attackers offside.

2. A lady's 'backdoor' or 'back passage'.
That bag of chips I bought her was a good investment last night, not only did I get my end away, but I also managed to slip one in her 'offside trap'.
by chesterpest January 17, 2010
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