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In other words this rubber cup which uses elastic Force to wrap around and seal a hole in a human body can compress the path of urine and not allow urine flow and cause it to back up into the kidneys and cause all kinds of dangerous symptoms and problems.

Who could have guessed if you put a rubber stopper in a human hole that it might cause some problems? Duh.

Just here praying that at least one brand of this product is named "cunt cork"