What is Mattress Pumper?
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A young guy, shy, loner, usually a teenager, often a geek, who does not have a girlfriend and spends far too much time alone, often at home in his bedroom, when other people his age are out having a good time. The implication being that he is
An underage drinker (under 18) is in a bar and bumps, into a grown man who shouts at him, "Piss off, you little mattress pumper".
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when you get head from a girl, you come in her mouth and then you punch her in the mouth, so her lips swell and come and blood dribble o..
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To sit backwards in a chair so that your stomach is against the chairs back. You may or may not cross your arms and put them on top of t..
