"Goodnight, and happy birthday Mom!"
Waving as he gets into his car with a tupperware container of cake under his arm, Mark quickly heads out to the local Observatory where his Girlfriend and co-worker/lab partner was waiting, by the time he arrive, an, itch, had developed on his lower back.
Mark ignored it as he pulled up to the Observatory, only he and Taylor would be there tonight, and once the scope was set and computers recording, the two intended to take full advantage of that.
Punching his code into the electric lock, he opened the door and called out, "Hello, Taylor, I brought cake."
Shuffling was followed by Taylor coming round the corner, "Over here, I already have everything setup and recording and I'm starved, you sure your sister makes a good cake?" Mark kissed her before handing over the cake, "Yep, I'm going to drop my coat off in the computer room, then freshen up before I join you under the 'scope.
Taylor smirks, "Well then, maybe I should put this in the fridge instead of eating it then, because if I start with this I'll finish before we start anything else."
Mark smiled, but frowned after turning round to head for the Computer room, there was a strange, warmth, starting to fill him. When he entered the bathroom, he splashed his face with cold water, he was starting to sweat, and that warmth was quickly building to a heat, a painful one.
The itching was getting worse, and when Mark went to scratch it the skin on his back it felt smooth, almost scaled, he was about to turn around when cramps bent him over in pain. He curls his legs, holding onto the sink counter to lower him to the floor, a wet spot forming in his pants, "Sshit, did I piss myself?"
Except, he couldn't of, he had been 'Hard' coming into the washroom, thinking of Taylor, and looking down, was it bigger? And the spot, lower?
Grimacing, yet still somehow hard down there, and with a tight chest, Mark unbuttoned his pants, unleashing his dick, hard and larger and redder then Mark ever remembered it being, poking out through the opening at the front of his underwear, a sopping wet spot between his balls and ass. "What the hell?"