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Fitting 2 series of o-rings, one around the coronna ridge to deepen it, and one to retain the foreskin over the glans. This method adds extra tension on both the outter and inner skins.
由...出版 nolievr
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Fitting 2 series of o-rings, one around the coronna ridge to deepen it, and one to retain the foreskin over the glans. This method adds extra tension on both the outter and inner skins.
由...出版 nolievr