Michael saw the perfect one after a few minutes. "Increased Penis Size". He grinned. That would be perfect! He was always getting teased in the locker room about his tiny cock, especially from that jock Danny. Danny had a very impressive endowment that put Michaels to shame. This would make that totally different. He bookmarked the page and ran home. He entered his room and locked the door.
Michael pulled down his pants and took off his underwear. He opened the tome and read the spell. The words were in a weird language and had trouble pronouncing the words. Michael cringed as he said the last words; he knew he had mispronounced some, and he recalled the warning saying to repeat the spell correctly, or else there would be unintended consequences.
However, he felt a gentle heat start in his groin and get stronger and stronger. His member began to pulse and throb, becoming pounding erect. Michael blushed; he was only 3 inches when erect! But, he saw his member slowly begin to lengthen with each pulse of blood through it. Oh Wow! It felt so good!
It felt like invisible hands were very slowly pulling and elongating his painfully erect cock. It felt so good. 4 inches. 5 inches. 6. 7! It kept going. His shaft was also getting thicker and thicker too. Pretty soon he was 8 thick inches! Wow. It felt so thick and heavy! This was everything he dreamed about. He noticed his testicles had grown to match. They now hung in a large sack. Each ball looked to be the size of a jumbo egg. Whoa! This is perfect. He hoped the spell would stop soon; this was just the right size to impress everyone in the locker room!
But, to Michael's horror, it didn't stop. After a few moments, it pushed over a foot long. "No! Thats too much! Stop!" Michael cried, but it didn't help. Michael noticed that his head was becoming flatter as well, and his penis was becoming darker. His testicles, likewise, were ballooning up. The weight between his legs was getting too much!
Michael ran to his desk and thumbed through the spell book, but couldn't find any reversal spells! He spent several moments looking, and when he looked back down, his pounding erect cock was jet black now! He was over a foot and a half long, and his head was very flat and blunt now! "Oh God!", he cried out. "What the hell is that! It doesn't look human anymore!". He reached his hands down and felt that his sack, now pitch black, felt like it was stuffed with two oranges. What is going on?!
As the changes finally subsided, Michael was left staring at his endowment. The cock, as thick as a babies arm and as black as coal, stuck out over a foot and a half from his body. It dripped a steady flow of precum all over his carpet and was visibly pulsing. He aw there was a big leathery bunch of skin at the base of his cock, and his head was flat and deformed. He reached his hand to touch his new cock and was suprised at how leathery and thick the skin felt. "What the hell is this?!"
Just the it dawned on Michael. His uncle was a farmer and he had seen this exact type of endowment before. Except it belonged to a donkey! Michael gasped outloud. He now had a donkey cock! An animal cock!
With a sour pit of despair in his stomach, he realized that the spell did indeed work, just not how he had hoped. He did now have an enlarged penis, he just didn't expect it would be a different species!
Michael looked at his erect cock in disgust; the erection just wasn't going away. He felt so horny, he couldn't even think straight! "Of course Im Horny! I have balls the size of grapefruits pumping testosterone into me now!". Michael looked at the tome and then back at his endowment. "What should I do! If i jacked off, it would help me think straight, which i can't do this horny and worked up. However it might change me even more! Or, I could read from the spell book and try to fix this! But another spell might just make it worse! hat should I do?"