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Where one does not engage in masterbation because they believe they will not have enough time to get a quality jerk in. However the expected time is wildly underestimated and they could have wanked in the aforementioned time frame.
DUDE 1: "Man I could have masterbated last night, but I thought my parents would get home. But then they took 2 hours longer than I thought!"

DUDE 2: "What a wasted wankertunnity brah!"
by VruhBaccum January 24, 2016
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