When you give someone a false number so that you don't actually have to speak to them again. Normally after you've met with someone new, and being the polite person that you are, don't want to say no to exchanging numbers. That way they think you are a nice guy, plus you don't have to explain to them why you don't like them. If the cover is blown, the person who got wrong-numbered can be blamed for not taking down the number correctly.
Guy1: "I called the number this chick gave me last night, but it was some random old guy..."
Guy2: "Dude!!! you got totally wrong-numbered!!"
Guy2: "Dude!!! you got totally wrong-numbered!!"
by linguisticosity1 September 17, 2009