The most action Jeff saw was his hand and the fabric of his underwear resisting the random erections he got... aside from that and going to the bathroom Dean was nearly forgotten after the first day.
A week later Jeff was in his room and watching YouTube when the irrational urge to lie on his bed and whip out his cock invaded his mind... Initially, he dismissed it as one of his many sexual intrusive thoughts but soon a tightening in his pants insisted obedience. Ripping his pants and underwear down he saw his erection and shrugged, no longer questioning the irrational whims of his hormones, he began stroking. Each stroke was more sensitive than usual and he only realized what was happening once his cock reached a foot and a half...
Dean reverted to human form and uncoupled from Jeff who was disgusted by his penis being dirty. Dean turned to Jeff lying nude on his twin bed with him and frantically gripped Jeff asking, "I was a good penis, wasn't I? I didn't disappoint you, did I?"
Jeff was alarmed and confused by his friend's attitude and immediately went to reassure him, "Yeah man, you were my normal penis, you did fine! I am gonna clean myself up, you should get dressed... I think my mom washed your clothes even."
With that, Jeff checked the hallway and waddled with his pants at his quads to the bathroom to clean his friend's fecal matter off his fuck stick.
Dean was still being transformed mentally back to normal, being part of another person's anatomy makes being their anatomy not only your job, but your purpose in life... Dean heard Jeff say 'normal' and 'fine' but heard 'mediocre' and 'complacent.'
Dean didn't get dressed... he needed to excel, he needed to surpass expectations! Dean walked over to the Chronivac and although the reversion process was still in progress he was able to pause it and queue up another transformation... Dean knew what was keeping him from reaching 'excellent' on his review... he was just a cock, a slave to external triggers and hormones... "Twig and berries" Dean chucked.
Dean made modifications, like disabling Jeff from reviewing the settings of his cock and balls while Dean has control and setting the transformation duration to three months. Dean will prove himself now that he can't be fired, has control of Jeff's hormones, and has a decent timeframe to work in!
Jeff cleaned himself several separate times with soap and toweled himself off. He was excited to have his friend back, part of the settings removed Dean from reality for everyone else and Jeff didn't have any other friends on the same level as Dean. Jeff walked back to his room absentmindedly unbuttoning his pants, pulling down his underwear, and beginning to stroke his penis...He entered his room to find Dean bending over his bed waiving his ass in the air again. "Ugh dude, I don't want to see that!" Jeff averted his gaze but realized he was still stepping closer and aiming his rigid dick at his friend's ass.
"Don't you worry Jeff, I'll do it right this time! I fixed the settings and you're going to be so happy with me!" Dean said.
"What?!? Dean, what did you do?!?" Jeff cried in shock refusing to his best friend.
"I'm going to be the best cock, because I'm going to be your balls too! You're going to be so happy Jeff!" Dean craned what remained of his neck to try to make eye contact and Jeff watched Dean's face become a cockhead and shrunk. This time deans legs didn't completely disappear, the upper part remained two muscular bulbs that hung down off the bed and fused with his testicles, they initially felt so heavy but once they began to become wrinkly like his scrotum sack and everything shrunk, it felt better...
The transformation completed and Jeff was again left alone in his room, what happened? Jeff looked down at his normal-looking junk expecting something different. "But I wanted my friend back dude," he said to the empty room... Jeff tried to look at what his friend actually set up 20+ times but found himself looking at any setting but those pertaining to his genitals. All he was able to see was a 3-month countdown timer ticking away...
"What have you done, man?"