Both Kyle and Charles had sat on the bench for a good minute or two. Both of them completely naked with Kyle holding Charles extremely close. Charles wiggled out and got up, kneeling in front of Kyle. He grabbed Kyle's still erect cock and began stroking it. Kyle moaned in response, not expecting their Round 2 to start so early. Within seconds, Charles already had Kyle's cock in his mouth. He clearly was new to giving blowjobs but it still felt amazing to Kyle. He couldn't believe how this had gone, he constantly dreamed about this and to get to fuck Charles was a dream come true.
Charles after sucking Kyle dry of any leftovers that weren't washed away in the shower, got up and turned around. He got on his hands and knees, presenting himself to Kyle who was still on the bench. Kyle couldn't help himself and got up to do the same. Now both of them on the ground, Kyle crawled over Charles resting his fat belly on his back. Kyle was probably somewhere around 280 pounds and Charles was easily 100 pounds lighter but they clearly both wanted this more than anything.
Kyle began licking Charles' ear, not realizing that his tongue had already become flatter and wider. Charles leaned into Kyle's tongue as his ears began to grow longer and move farther up on his head. Kyle put his hands on the ground and slowly slide his cock into Charles' ass once again. A small bump began to form at the end of his tailbone, pushing out.
Kyle whispered into Charles' ears as he slowly slid his cock back and forth, "I want to be with you forever." That was a bold thing to say but he knew he felt it. He wanted to leave his life behind only to spend it with Charles.
Charles responded. "Me too." Black and Brown fur began to sprout all over their bodies. Kyle began to slide his cock fast, slowly accelerating and building Charles to a climax. At this point they are rutting like dogs, Kyle's chubby body practically eclipsing Charles'. By now they are starting to realize what is happening but they don't care. All they care about is that they are together, pleasing each other.
Kyle's body begins to slim down, losing a lot of the excess weight he has gain over the years. A small tall forms above his ass, wiggling back and forth as he continues fucking Charles. Just under Kyle, you can see Charles' hands have almost been completely turned into paws. Now their bodies are completely covered in black and brown fur. You see both of their legs begin to reshape into the hind legs of a dog. Both of them too lost in the moment to care. Kyle has a full tail now, wagging it at the same pace he is thrusting into Charles. Kyle's body slimmed down to the same size as Charles now, losing the sexy curves he prided himself on.
Both moaning as they fuck on the floor of the locker room, all that's left of their human bodies is their faces. Both of their faces push out into a muzzle with their new flattened tongues hanging out. Charles begins whining as Kyle pounds him harder and faster, no longer able to communicate like a person. Kyle's cock begins to feel as if it got tighter in Charles' canine asshole. He is about ready to blow, wagging his tail back and forth as Charles' whines beneath him.
He comes as the finally changes are completed with his muzzle. He tries to pull out of his mutt's ass but finds himself stuck, not realizing the massive knot now apart of his cock. He licks Charles' ear as if he were giving him a kiss. He finally pulls out of Charles, who collapses on the floor where he was.
Kyle goes to lay next to Charles, both of them lie there for what feels like an eternity. After a while the door opens and someone walks in. Not realizing that the two Doberman hounds were once just a teacher and his student.