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The act of taking a selfie while taking a shit in the upper tank of the toilet, thereby leaving for an unsuspecting friend or foe a beef stew flush on the next use.

Once the prank has been exacted on your target, posting your photo to Facebook to share with all your friends exactly who accomplished this diabolical deed.
Dave took the last beer, so I posted my Upper Shelfie on his Facebook after hearing him flush then vomit in the bathroom
by BaldAvenger February 23, 2014
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