Jerry smiled at Ben, "Let's take a walk, we have a few hours before evening meal."
Ben shook his head, "You go on without me."
Jerry asked, "How old are you, 14?"
Ben laughed briefly, "16"
Jerry nodded, "You must have made a low score on the test Sister Abigail gave you"
Ben just started at Jerry and shrugged, "It doesn't matter. I was not going to any Nursery."
Jerry smiled, "Did she warn you about me?"
Ben looked up, "No dude, she just kept pushing me to take the Nursery route."
Jerry slowly took off his clothes, until he was naked in front of Ben.
Ben stared at Jerry's crotch, "Dude, you got a pussy."
Jerry smiled, "Do you like it? You can touch it if you want."
Ben stuck out his arm, and with a finger slid slowly into the top of Jerry's vaginal lips, finding the clitoris. Jerry gave a soft moan and a brief shiver. Ben pulled his arm back, and smelled his finger. Ben looked more, "Jerry...are you a girl?"
Jerry shook his head, "Sister Abigail did not tell you anything, not even the rules. They should tell you more before you get to me. Ben, I am no more a girl than you are. Would you prefer I slide a hard shaft into your eager asshole? I will be blunt, you are not interested in the tour, we have a few hours, so we can just fuck around here, if you want. Do us both a favor and just strip down, and we can get started."
Ben knew something was wrong, and got up to leave. Jerry stood there as Ben stopped at the door. Ben's hand was on the knob, but his cock was throbbing.
Jerry smiled, "This is normal. Your mind is conflicted. Just turn around, strip down, and lie on the bed."
Ben did not want to obey, and he fought in his mind. Ben fixated his vision on the knob, willing his hand to turn it, but nothing happened. Ben was angry, and growled, "Is this how you treat your roommate?"
Jerry smiled, "Yes, it's the mate part of roommate. Turn around and see if you feel mistreated."
Ben turned around and saw Jerry, or what he thought was Jerry. Jerry's body was now fully female, and the pert breasts and large nipples caused Ben to release the door knob and turn around.
Jerry nodded, now in a female voice, "Better. Now if you can dispense with the clothes."
Ben did not need further prompting, and quickly shed his clothes and stepped closer to his quite female roommate. Jerry took Ben's hand and led him to the bottom bunk, where Jerry sat down and swallowed Ben's hard member.
Jerry fucked Ben for hours, and never once used the missionary position. Jerry never let Ben recharge, and milked orgasm after orgasm from Ben's increasingly spent body, until he collapsed in exhaustion.
Ben awoke with Jerry drying off. His now naked male body now sported a large flaccid cock. Ben slowly sat up on the edge of the bed.
Jerry threw a towel over to Ben, "Shower time. You did good today. That's a lot better than just jacking off by yourself. We will spend a lot of time together. You just need to keep your grades up and follow my rules, and today will be just a taste of what is possible."
Ben stared at Jerry, "How?"
Jerry pointed to the shower, "Ask questions later, now you need to shower. Your soap is in the shower."
Ben was groggy and took the towel and stepped into the shower. Ben turned on the shower, keeping it quite hot. Ben got the soap and went to lather between his legs when he let out a brief scream. Ben held his cock in both hands and yelled through the shower door, "Jerry...can you explain?"
Jerry, now fully dressed, stepped into the bathroom. "You did good today. I wanted a bigger cock to fill me up, so I gave you a horse cock with a huge knot. Consider it one of the benefits of us being friends. Go ahead, and try it out in there. The taste should be to your liking."
Ben took no time to get to orgasm, as his modified cock was much more sensitive. Ben spent the rest of the time in the shower massaging and milking his huge organ.
Jerry came back with supper for both of them, and turned off the water to the shower when he found a sleeping Ben sitting in the shower, his cock head still in his mouth with semen and fluid leaking from his lips.
Jerry cleaned up the room and packed Ben's clothes back into his suitcases. Jerry assumed his female form and went to bed on the bottom bunk. Jerry smiled to himself, he would have to thank Sister Abigail when he saw her again.