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its when you are going to take a shit but you have to stop on the way to tighten you asshole to keep the shit from coming out.
i was going to shit when i became shit locked and had to stop in the middle of the hall at work
by Richie1966 February 18, 2009
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When things are going bad and there's no way out
Fred : Did you study for that test last night?

George : Aww man i forgot

Fred : Dude your shitlocked
by Matterhawk February 10, 2010
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