Just this once

Shelby figured she probably could have gotten out of there without sucking Brandon's dick, and a month ago she would have. But here she was on her knees, having just drank his massive supply of piss, sucking his cock for a little more didn't seem particularly shocking, especially as the other girl in the bathroom had just given her urine donor a blowjob, and Wei had a squeaky clean reputation. Maybe Shelby could cut loose for a once, especially if her brother was off banging some slut and peeing in her mouth.

She put down her phone and kept her mouth open, which Brandon apparently took as consent. He shook off the last drops of his urine by slapping his cock against her lips, and she let the golden drops fall her tongue. Then, without warning, the juvenile delinquent pushed his cock into Shelby's mouth, stepping forward and grabbing her beautiful, carefully kept orange-red hair and using it as a handle to fuck her face.

Shelby managed to swallow the last of the piss, then braced her mouth to be used for a boy's pleasure. Brandon was not going to be gentle. He pushed his boner against Shelby's throat, making her gag, but she held it under control for now. She saw Wei slumped over now out of the corner of her eye, recovering from her own face-fuck and coming over to watch Shelby take hers.

Shelby opened her mouth wide to take the invading dick. It wasn't huge, thankfully, but with his balls slapping against her chin she was taking about her limit of **** and felt drool starting to seep out of her mouth.

"Awww is Madame President not used to sucking cock?" Brandon taunted. "You should campaign like this, sucking our cocks for votes."

Shelby groaned as he abused her mouth. Now Wei was behind her, holding her head in place for Brandon. Wei's satisfied bully had wandered out of the bathroom by now, leaving just the three of them.

"Fuck yeah," the boy said, "Like her mouth a lot better full of cock."

"Me too," Wei teased. Shelby found herself perversely turned on by the academically-inclined girl joining in on this.

Brandon fucked her mouth, making loud slurping sounds. Shelby closed her eyes and realized she was soaking her panties with excitement. She was giving a blowjob, or being **** to give a blowjob, in the boy's bathroom after having just drank a ridiculous amount of urine. She was humiliated, but turned on wildly.

The shaft went deep again and again into her wet mouth. She ran her tongue over his length, telling herself she was just trying to make him cum and end her ****, but she knew she was eagerly sucking Brandon's cock.

"Fuck," he said, "Madame President is a cocksucker! Who know?"

Wei laughed. "Don't worry Shelbs, I won't tell anybody your secret," she said.

"I won't either if you suck me whenever I want," Brandon said. Shelby nodded eagerly.

Brandon pushed his shaft in deep, the base of his cock against her lips, then his dick exploded with cum deep inside Shelby's throat.

He pulled out, making a nasty sound, leaving Shelby's mouth leaking sperm and droop. She doubled over on the bathroom floor.

"Well, thanks for the blowjob, Madame President," Brandon teased, then tucked his cock in his pants and left.

Wei helped Shelby to the sink and washed her face for her.

"It's okay girl," Wei said, "I'm a slut too."

Shelby sighed, humiliated, but let the girl clean her.

"Oh, can I get a ride home?"

Shelby laughed. "Sure," she said, "Come on, let's go."