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geyser under pressure

The act of urinating while your penis is fully erect, referred to also as Mount St. Urin, Morning wood surprise, or uncorking the yellow.
Dude, I woke up this morning at full mast and unleashed one helluva geyser under pressure
by Wetbackeralamo69 May 13, 2015
mugGet the geyser under pressuremug.

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