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Shower hour: is to take a shower for an hour to partake in masturbation.
Glenn took a shower hour, and came out relieved.
by Scoob-a-doo November 20, 2009
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Time between 9:30-12 , or 1-3 AM if your coming home from a party.
Guy 1:Dude, where is everyone ? No ones online !

Guy 2:Stop bitching, its shower hour .
by mrjames81 March 19, 2010
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