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1. To masturbate vigorously. Always associated with males.

2. To procrastinate.


1. ...Then suddenly he dropped his pants and immediately started firing off the ol' skin pistol. Fucking disgusting wanker.

2. Do you really think she is going to introduce you to her parents, or are you just firing off the skin pistol?
by zachary_MIDWE$T April 20, 2009
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