You are a young man, 19 years old. You look down at the box of items. "what the fuck is all this crap!!" You then look through the assortment of medical vials and notice a tube of ointment. Even though this was all obviously made for dogs, your curiosity gets the better of you and you squirt some of it onto your finger to see what it feels like. As you rub it, you notice that it feels like lubricant and has a strange warming sensation. "I dont have a dog!, why would someone send me this crap!" You then stare at the tube in your hand. "Well, i might aswell not let this go to waste since i already opened it" and begin to undo your shorts and let them fall. As you sqeeze the gel onto your hand, you start to get a strange tingling feeling even before stroking your cock. You soon have your cock covered in the stuff and are amazed at its effect. Not looking a gifted hose in the mouth, you even apply some to your chest and start to carress you lanky pecs and abs. each stroke on your cock creates a jolt of energy through your body. Normally you would be worried, but experiencing soo much pleasure makes you shrug it off and continue. Your hands continue to move up and down your shaft and slowly bulking chest. Suddenly, you notice fine black hairs growing from your forearms and become startled. You attempt to stop and realise that you have become incredibly itchy on you chest and you begin to scratch. You also notice that each pump of you cock seems to give you the feling that its getting bigger. As you scratch your chest, you are hit with a wave of pleasure and cant stop rubbing. Curious to know what is causing the itch, you lift up your shirt, that once hid you muscular pecs and abs to reveal long black and tans hairs growing around your chest and spreading down your stomach in the form of a treasure trail.