This image is Zach from Michael Rosen's book Vanilla Sex.  You can get a free download of the entire PDF book at www.michaelrosen.com. Select "Vanilla Sex" under GALLERIES in the left column, then click on "downloadable PDF" on the Vanilla Sex page, and then click "Download" on the download page if you agree to the licensing terms. - Image by Michael Rosen
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Urethra

The tube through which urine passes out of the body; in males, it is also the tube through which semen is discharged.