You decide to check out a brown jockstrap since it's the closest to the top. Upon closer inspection, you can see a picture of a stallion rearing up. Thinking about some sexy cowboy you saw online, you choose to try this one first. While the waistband wasn't really tight, you had too much room for your dick. You could probably pull the waistband to your head and your dick still wouldn't touch the bottom. In the mirror, you admire the look. The sag in the jockstrap makes it look like you have a loincloth and that was kind of turning you on, but the jockstrap started getting pulled up closer to your knees. Dropping it on the floor, you're awestruck at the size of your enormous member, hanging down to your knees and only semi-hard. While your dick was filling in with blood, you feel a sharp pain in your ass. Turning around, you can see it elongating with two little nubs poking out from underneath it, slowly growing into legs. As the weight of your rump pulls you backwards, you start to fall, only to get held up by two extra legs. Your cock is getting pulled along too while your balls have grown immensly, almost imitating an orange tree with their size. You're face begins to change to with your mouth and nose protruding outwards. You try to grab your face in fear, but your arms are shrinking and fusing into your torso. A mane sprouts up along your bare back as your entire body gets covered in lush brown fur. You can feel your neck grow as your stomach now gets pulled back with your ass. Your abdominal muscles begin to strenghten and your legs grow nearly 3 times stronger than before. Staring down at them, you notixe your toes are fusing together to form black hooves. Your two rear nubs have now grown into identical copies of your front legs and your ass grows even wider. Looking at the mirror, your head has taken the same shape of a horse while your ears are still being brought upwards. Your arms have now vanished and your rear has finally stopped extending. Bending over to look at yourself, you see one hell of a sight. Your balls have grown to to the size of eggplants and your cock is fit for a noble steed. Nearly 18 inches around, your massive erection is pushing it far enough for you to suck it, almost 4 feet of flesh that's beginning to trigger the most intense orgasm you've had. While you decide against sucking it, it feels like something inside of you is finishing the job for you. For nearly a full minute, load after load of your horse juice is pumped out of your cock and almost has the power to chip the paint off your wall. As your cock has been relieved, you see it begin to shrink back when the jockstrap catches your eye. It must've fallen off, but while it's obvioud that the jockstrapped caused the transformation, you still feel doubt. Trying the bland grey pair on, you turn back into yourself.
"Okay, so it is the jockstrap. At least I was right about the bland grey one," you say. You feel kind of tired, but before you decide on the next move, you want to relieve yourself. Maybe it'd be best to do that as a horse?
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