Tyler was mentally screaming when the next change began; the tastes and smells all of a sudden intensified, to Tyler's horror. Oh god, what was happening! The smell and stench of ball sweat got heavier and heavier. It was terrible before, but this was unbearable! The salty taste of old sweaty dick multiplied. "What the fuck! Oh god please" Tyler begged in his mind. This was horrific.
Unknown to Tyler, the Chronivac was applying an update to his new form, to make it more comfortable, more familiar for Zach to wear. Zach had a really bad habit of wearing his jockstraps over and over, for years, rarely washing them. And, occasionally, jacking off and cumming into then.
Tyler's white fabric began to get yellower and yellower. Years of sweat and grime began to seep into him fabric. To Tyler's horror, he was forced to taste and smell as the years of old sweat. He could feel something happening to the fabric in the pouch; it slowly started to get hard and crusty. The fabric began to gain even more stains as it got even crustier in the crotch, which was now his "face".
The years of ball sweat were now accompanied by a new stench and taste, and it made Tyler's stomach turn. Tyler's jockstrap body was being filled with countless dried loads that Zach had deposited into the filthy garment.
By the end of Tyler's transformation, he was left as a filthy, yellow, stained jockstrap. He was very obviously well used and absolutely stunk.
Tyler wanted to scream! He was stuck, forced to smell and taste his roommates smelly ball sweat and old cum! It was a nightmare! He struggled with all his might to move, even an inch! He tried as hard as he could to get off of Zachs smelly penis stuffing his pouch. But that wasn't possible; all Tyler was, and would be forever, was a stink inanimate jockstrap.
As Tyler struggled to accept his cruel fate, Zach cupped his balls and grunted; "Damn why am I so horny", he said to himself. Zach sat down at his computer and began to turn on some porn. Zachs massive hand snuck slowly down past the waistband and began to stroke himself, rapidly getting hard and pushing against Tyler's pouch face painfully. As the strokes increased in speed and Zach began to softly grunt, Tyler screamed inside of his head, cursing his horrible fate!