Things get messy

Lily put down her notes and grabbed a butt cheek in each hand, spreading them as far as she could, giving the gathered audience a perfect view of K-T butt hole. He was completely hairless except for his head after a girl at school had pranked him by adding hair removal products to his shower gel the last week.

The nurse approached him and started to push the end of the thermometer on his anus. She pushed it slowly, telling him to relax. Once inside she pushed a bit harder. K-T already hard as steel felt his dick twitch to the unfamiliar sensation of having something inside him.

"There, now we wait for 5 minutes to have a clear reading." K-T was feeling really uncomfortable in this situation and now it would last that long? This was getting worse and worse. He could hear his mother chatting with the doctor, but couldn't focus on what was being said. He felt something push outside like he was going to poop.

"Oops, be careful the probe needs to remain in place to get a proper reading." said the nurse as she she shoved it back inside before it completely fell out. Sadly barely a few moments later he felt it start to slide out again and being pushed in yet again.

"Miss Peterson, would you mind holding it in place until it beeps please? It will take forever otherwise."

"No problem, nurse Fairbairn. Do I just push it in?" asked his crush, as he felt pressure on his guts from the device being pushed farther than before.

"Not too far, just stop it from falling out."

K-T didn't know if it was by design, but she ended up only pushing it to the point where it could almost stay in place. It kept being pushed out and shoved back in every few seconds again and again. His perception of time was twisted by this and he felt like he was on his third hour of those five minutes as he was focusing not to cum from the stimulus.

Suddenly as it was shoved in a last time he heard a muffled buzz and beeping sounds. The device was vibrating while buzzing. It was too much and his dick exploded in a rain of cum. The massive orgasm had it flailing around. He got cum on his belly, chest and even on is face as he had been trying to look behind him from underneath his body. He had always cum massive amounts, but he had never felt so drained before. The gown and the paper protecting the table were covered in the stuff.

"Kyle Thomas! What the hell do you think you are doing?" screamed his mother. "This is totally unappropriate to do this in public! See doctor this is what we have to suffer all the time!"

While he was getting screamed at he felt the probe being yanked out and the nurse read his temperature.

"No fever, Doctor. I think we can apply the treatment. It looks like it's an urgent matter." remarked the nurse.

"I agree, he is otherwise healthy so there will be no counterindication for the ****. Please administer the first dose, then we will clean up and do his sister's examination." instructed doctor Conners.