Monday
Harry had detention with Umbridge every day that week. The first day he had to use a bloodquil, writing “I must not tell lies” over and over for hours. He couldn’t even get up to use the loo. He tried several times to ask if he could be excused, but Umbridge just tilted her head, blinked, and smiled. Every time she would say: “Get back to work, Mr. Potter,” in a sickly sweet voice. Harry managed to hold it until his detention was over. That was the best detention he would have that week.
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Tuesday
On Tuesday he tried to go to the bathroom before his detention, but was held back by Professor McGonagall, who wanted to discuss his plans for his future. Ever since Umbridge told her that Harry would never be an Auror, she was making it her life's goal to make sure he would be. This left no time to use the bathroom as he just made it in time for his detention. The first half of his detention was exactly the same as the last. Harry opened up the wounds on his hand with every line he wrote. Eventually his bladder demanded attention again. He held it for two hours before he was shifting uncomfortably in his seat. Umbridge definitely noticed, but didn’t say anything. In fact Harry could see a small smile on her lips. After another thirty minutes, Harry got up. He couldn’t take it anymore. He was sweating with the effort it took to hold in his piss.
“Hem hem, Mr. Potter. Please take your seat. We are not yet done tonight,” she said, motioning for him to sit down.
“I can’t! I can’t hold it anymore!” Harry screamed as he ran for the door. He didn’t care if he got a whole month's worth of detentions. He had to go to the bathroom now! Right before he turned the handle, that toad of a teacher put up a locking charm. Harry turned the handle in desperation, but it wouldn’t give. Suddenly, without his permission, his bladder burst and he could feel warm piss running down his legs, pooling on the flower-patterned carpeted floor. He could also feel unwanted tears streaming down his cheeks. He couldn’t turn around. He couldn’t face Umbridge with piss soaking into his clothes.
Umbridge walked to the other side of her desk, toward Harry’s back and placed her big hands on his shoulders. She turned him around to face her. “My my, Mr. Potter. what a blatant show of disrespect,” she said, smiling down at him. “Do you pee your pants in detentions with your other Professors? Should I ask them?”
“NO! I don’t I swear! I- I just really had to use the loo. I couldn’t hold it. Don’t- don’t tell anyone. Please,” Harry pleaded. He knew Umbridge. It wasn’t just a threat. She would tell if he didn’t apologize. “I promise I won’t complain anymore. And- and I won’t talk about Vol- I won’t tell lies about You-Know-Who being back.”
Umbridge raised one eyebrow. “Well, I suppose we can get back to your punishment, if you promise to be good-”
“I will!” Harry interjected.
“But we’ll have to change your punishment a bit. Hmm, first why don’t you remove those wet clothes so we can get started?”
Harry gratefully removed his outer robe, but hesitated at his trousers. Umbridge lost patience and just pulled them down along with his underwear.
“Now, step out of them and put this on. I’m sorry but it’s the only uniform I have at the moment.” Umbridge held out a girls' uniform skirt, no underwear.
“Can’t I just cast scorgify on my clothes?”
“This is part of your punishment. Now put that on or would you rather walk around in the nude, you little pervert?”
Harry took the skirt and put it on. It was too small and barely covered his bum and penis. Umbridge then told Harry to get on his hands and knees and transfigured his chair into a small desk with legs only a foot in height. She placed it on the floor next to Harry and put a piece of paper and a different bloodquil on top of it.
“Now write ‘I will not pee my pants’.”
Harry did not want that scared on his hand, but Umbridge’s smile told Harry he didn’t have a choice. He put quill to paper and began writing. He was surprised that he felt no new wound opening on his hand. Instead, a searing pain was beginning on his left bum cheek. “Ah! Ow!” He couldn’t help but holler. He kept writing anyway. He briefly thought about telling Dumbledore. If forcing a student to scarify his hand was against school rules, this must be illegal. But he didn’t want to give that bitch the satisfaction of knowing she'd gotten to him. The punishment continued until Umbridge declared his detention over for the night.
“Uh, uh, Mr. Potter. Leave those on,” Umbridge admonished when Harry tried to take off the skirt she had given him. “I want you to wear that all day tomorrow, and no underwear. We wouldn’t want you making a mess of another pair, now would we?” She said, blinking at him.