Sam wriggled in a vain attempt to free his wrists from the socks that bound them behind his back, but it was all he could do to keep himself from falling over onto his side. He would have found that preferrable to doing this awkward bridge position that left his hairless, undersized penis and tautly clenched bare bottom on full display for everyone in the hallway to see. But Brady's grip on his tighty-whities held him more or less firmly in place.
Laughter roared in his ears, and the comments he heard the other boys and girls making set his lobes to burning. All around him stood guys who were bigger than him, all of them confident in their state of being fully-dressed, though he caught a few furtive glances from the more socially-vulnerable boys as they remained silent, not wanting to be put into Sam's position by the bullies. There were a lot of girls in the gathered crowd that he recognized, girls he'd had secret crushes on or had thought about late at night when he lay in bed and let his fingers creep underneath his underwear to bring himself secret, shameful pleasure. Now they were all witnessing him in his full nudity, and many of them made it very clear that he would never, ever have a chance of going out with any of them.
His cheeks were flushed with shame, and he couldn't stop the choking, racking sobs that made his slender young body tremble all over. His tears ran hot down his cheeks, dripping down his chin. While his little penis had been stiff and throbbing from the intense ridicule and exposure - and indeed, the humiliatingly stimulating wedgie itself rubbing tight against his dick and up between his buttocks, stimulating his prostate - in his present contortion he found his arousal flagging just enough that he became aware of how full his bladder had become. Bending over backward, trying to stay up while Brady held him in place only seemed to emphasize his bodily need. Sam begged and pleaded for Brady to let him go, his voice high-pitched and growing in urgency as he realized he was rapidly running out of time before he would end up wetting himself.
Brady merely laughed. "What's the matter, small fry, you got a hot date waiting for you?"
"Yeah, with his hand," one of the mean girls suggested. That caused another chorus of laughter.
"That poor boy," said Trina, one of the preppy girls who had originally protested. "Can't you see he's in pain? He's never going to live this down. Haven't you bullied him enough?"
Sam felt gratitude for Trina sticking up for him, but at the same time, he couldn't ignore the pity in her voice, and as he struggled to maintain control over his bladder, he winced at the unintended blow to his ego her words caused him. Trina would never see him as a man, much less as boyfriend material, nor would any of her friends. Even though they defended him, they would never respect him.
Brady looked at Sam. "The bell hasn't even rung for next period. He's got a few more minutes he can spare volunteering for Biology Class," he joked. "Maybe you can ask the teacher for extra credit, Sammy?"
"That's not funny!" Trina said. "Look at his face, he's miserable!"
Sam realized he couldn't stop what was happening. His own body continued to betray him. Despite his best efforts, he couldn't keep the floodgates closed.
Trina stepped forward, standing between Sam's legs to shield his nudity from at least a quarter of the gathered crowd. Her plaid dress served as a modesty curtain to conceal his bobbing little dick from view. Trina turned around to face the students and admonish them. "You should go to your next class. This bully just wants an audience, so if you all leave he'll lose interest. Imagine if this were happening to you!"
Sam whimpered out loud as he suddenly began to pee. A stream of hot urine arced out of his tiny dick and began to spatter against Trina's bottom through her plaid dress. The golden stream sprayed back and forth across her backside as his penis flopped to and fro like a garden hose on full blast without someone to hold it steady. The crowd of students erupted into renewed laughter and mockery, whistles and jeers as Sam pissed himself uncontrollably in front of them. Trina, feeling the hot wetness soaking into her panties, got a shocked expression, gasping with her mouth wide. She twisted around to see what was happening. At first she suspected Brady was pulling a prank on her, but she saw naked Sam's little dickie pissing an arc of urine at her, and another glance down at her dress confirmed that his pee had caused the back of her dress to cling to her skin so snugly that the clear outlines of her panties hugging her bottom cheeks could now be easily seen by the onlookers. Many of the students started laughing at her, pointing out the teddy-bear pattern that they could make out on her panties under her piss-soaked skirt.
Sam was excruciatingly embarrassed, not least because he had been so desperately in need of peeing that letting it go like this, even though everyone at school was watching it happen, felt immensely relieving. In fact, it was almost orgasmic in how good it felt, and in his emotionally and physically vulnerable condition, he couldn't stop himself from moaning amidst his miserable sobs. A warm puddle of golden urine spread out underneath Sam's body on the tile floor, and as his stream dwindled to a trickle, it dribbled down his taut scrotum and dripped between his butt cheeks, leaving his slender, hairless body slick and shiny with wetness.