Todd felt a jabbing pain in his buttocks as his hand slipped off the door knob. He turned and saw a big empty syringe, and the doctor grinning. The room blurred, and he passed out.
Todd woke with straw underneath him. It was dark. He struggled to his feet. There was something in his mouth and on his face. His hands were useless, they were bound and covered in heavy burlap sacks. Todd realized he had a bit in his mouth, and a muzzle or harness over his head. Looking around in the dimly lit barn, he realized he was in a barn. In the adjacent stall was Merrybelle, the school's mascot. The team was known as the Palominos. Todd suddenly caught wind of Merrybelle's scent.
"Oh, great, she's in heat!" he muttered into the metal bit. He recalled that donkeys and horses were bred to produce mules. She was a fine looking bit of horseflesh, he thought involuntarily as his shealth slid back to reveal his slick donkey dick. "No, I mustn't," he muttered, but his animal instincts were becoming so strong.
Todd looked at the slats on the door of his stall. He quickly climbed them and out of the stall despite having his hands bound. He paused and looked at Merrybelle's stall. Then he looked at the barn exit. Then he looked at the small office at the end of the barn, he could see a light through the glass window.