Master Zach is at it once again, disguising his bondage and torture fantasies as “medical tests.” Well-hung twink boy Shane comes into a sperm bank to have his sperm tested; little does he know his medical technician is interested in a lot more than sperm counts. Electro-shock to the nipples and penis while strapped to a bed were far from what Shane was expecting, and his tortures have just begun. Next Week: Anal probing and electro.

Master Zach's electro-torture of his young patient's asshole continues. Despite feeling sexually violated, Shane trusts Zach's insistence that this is "standard procedure." The anal probe sends electro-shock sensations throughout Shane's entire body, causing his lean muscles to spasm from head to toe. Shane is ready to get off and get out, but Zach has a couple more tests to complete before Shane can stroke his long, hard cock. Next week: Shane donates a cupful of cum.

After endulging his medical pleasures with his old bitch-boy trainees, Kyle and Shane, Master Zach brings in some fresh meat with his new toy, Eli. Eli, with his perfect ass and ripped, sexy upper body, has no shame in donating his prized sperm for some extra cash, so he gives Doctor Zach’s sperm bank a visit. Little did he know donating sperm involved such rigorous yet "necessary" testing, but hell, Zach is a doctor, and we all know to trust the doctor. This is exactly what Master Zach was counting on as he preys on his victim’s feeble minds, and he wastes no time jumping into testing with full-body inspections and electro-shock to the nipples. Next Week: More “necessary” testing.

Master Doctor Zach continues his rigorous testing routine on his sexy bitch-boy sperm donor, Eli. Eli has no idea Zach just wants a shot at that perfect little ass of his. Once the “readings” from electro-shock hit satisfactory levels, Master Zach wastes no time in putting Eli in that all-too-natural doggie-style position, ass nice and high to expose that inviting little ass-hole. While admiring his cute butt, Zach decides to make sure Eli is nice and clean with no disease, so he shoves the anal spreader deep inside Eli’s ass to check for abnormalities. When all looks good, Zach admires for just a bit longer before flipping Eli back over. Next Week: It appears Doctor Zach needs to do just a few more tests before allowing Eli to stroke that beautiful cock of his.

Master Doctor Zach is all for allowing this beautifully ripped twink bitch, Eli, to stroke his cock for a sperm donation, but not before he has had his own fun. After close-up inspections of Eli’s nice cock and genitalia, Doctor Zach decides to step the testing up a notch with electro-shock through the ass-hole. Doctor Zach fancies that tight little ass, and there is nothing he wants to do more than test its sensitivity and responsiveness to electrical shock. Go figure…Eli’s ass is a natural conductor of electricity! Next Week: Eli donates some cum.

The favorite, perfect-assed Eli continues to enjoy his visit to Master Doctor Zach’s office, especially since he is finally able to do what he came here to do; stroke his dick and donate sperm. In fact, this twink bitch was looking forward to cumming so much that he decides to do it TWICE, without ever losing a lick of stiffness in that nice little cock of his! You read that correctly; Eli is a professional when it comes to multiple orgasms while remaining hard. Now Eli has something else to brag about besides that plump, petite butt of his…

It's Tyler's turn for his contribution to society by donating his bitch-boy sperm, and once again Master Doctor Zach must use "standard procedure" before allowing this little twink to stroke himself. As usual, Master Zach likes to use nipple and cock electro-shock to send piercing pulses throughout the contracting naked body. Tyler is unsure what to think of Doctor Zach's "procedures", and he is curious what is yet to come before he is able to "cum". Next Week: More electro-shock and other "standard procedure".

Tyler continues to endure Master Doctor Zach’s tortuous medical procedures before donating his bitch-boy sperm for the creation of bitch-boy twinks. Continuation of electro-shock to the nipples and balls sends Tyler’s nerve impulses into a frenzy as he flexes those tiny yet sexy muscles in pain. Master Zach becomes satisfied with the initial electro-shock results, so he decides to move on to the next test: anal probing and electro-shock. Tyler is encouraged into the doggy style position for Master Zach to check out that nice little ass-hole. It is clear that Master Zach knows his way around a twink bitch butt. Next Week: More anal inspection and electro-shock.

Master Zach wastes no time in letting Tyler’s perfectly tight asshole relax. Following the anal spreader, the anal electro-shock probe provides a perfect buzzing sensation throughout Tyler’s beautiful twink bottom. As a standard medical test, Tyler endures it with an almost tingling pain sensation shooting through his nerves, causing his rather small, yet defined muscles to tense. When solely anal stimulation proves weak, Master Zach turns it up a notch with co-shocking of the dick and balls. This provides an anal-genital stimulation like Tyler has never felt before; unfortunately, he must withstand utter pain for the experience. Next Week: More electroshock in preparation for the stroking of Tyler’s perfect cock.

Tyler’s beautiful butt receives continuous attention as Master Zach performs more electro-shock via the metal dildo. After Tyler seems to be responding normally to this standard anal stimulation, Master Zach decides to take the testing a bit further; he explores Tyler’s asshole with his finger to make sure everything is “normal” in there. Nothing gets Master Zach more excited than torturing a perfect twink butt and hole, so making Tyler as uncomfortable as possible is like a day at the beach. When every test seems to check out okay, Master Zach instructs the naked and now timid patient to jack his dick and donate sperm. After all the awkward tests, Tyler strokes his cock with pleasure.