A delayed hormone surge.

It began one Friday night early into their senior year. Brandy and Sean were having a sleep over at her house while her parents were gone for a business convention.

The night had gone like so many hundreds of sleep overs from years past. First a dinner of pizza and cheese sticks followed by a shared banana split, then finishing with a nice walk through any number of movie series. This week it was The Avengers series.

It was during the last movie where Brandy began to feel a bit woozy, "He-hey Sean...could you pause it for a second? I'm not feeling well." Frowning in worry, the athletic young man stopped the movie, and turned to take care of his BFF. Brandy went into the bathroom, and splashed some water on her face, and took her temperature. She wasn't feverish, despite the flush spreading across her face, and spreading under her hoodie across the top of her generous bust. She wiped her face with a towel and came back out, trying to return to normal.

Seemingly recovered from her dizzy spell, and hot flash, Brandy shrugged it off as a consequence to her upcoming period. As the night wore on, however, Brandy started feeling hot again, her skin flushing and Sean doting on her with ice packs and fresh water.

The buxom bombshell had drifted off to sleep when the switch happened.

The first thing that happened was her hypothalamus and amygdala were flooded with specific neurochemicals and a more than healthy dose of dopamine. This resulted in her dreams taking on a shift.

Originally she had been dreaming about flying through the Andes mountains like a super hero, and in the blink of an eye, a certain 'big, blue, boyscout' was flying with her and Brandy felt something flash through her body. The deep voice of the hero next to her said, "I've just checked you out with my x-ray vision to make sure you weren't an imposter. Care to land in the jungle and...chat about a few things?"

Even in her dream-like state the short, busty girl could tell the innuendo Superman was making to her. Instead of rolling her eyes like she usually would have, she felt a spread of heat across her face, chest, down her spine and... something tingle its way through her pussy.

As her dream continued, Sean awoke, hearing her soft giggles and moans through her sleep from the couch above him. He shook his head from the floor where he had drifted off, and smiled as she continued to talk in her sleep.

The hot flashes and warm tingles continued to **** Brandy's body as nerve-endings in her nipples, breasts, neck, tummy, and entire vaginal tract came online for the first time in her life.

Brandy was feeling horny for the first time, and her dream was changing to reflect this new development. Superman had gone from holding her hands, to leaning down to kiss her neck and collar. She could feel the way her body was lighting up outside the dream as her hips wiggled and legs began to rub together, the wetness began to seep into her panties.

This wetness would be the last straw before her body woke her up, thinking it had peed itself. She had just gotten to a part where the tall, handsome hero had just began to run his muscular hand over her pubic mound, a finger dragging its length across her clit, when suddenly she was sitting up, wide awake, and already getting off the couch when she tripped over the blanket which was wrapped around her feet.

When she fully recovered, she could feel a pair of hands on her hips, a muscular chest in her hands, and none-other than Superman's bright blue eyes staring back at her.