Liz came home from school and dropped her book bag in the kitchen with a huff. She just finished up baseball practice and she was completely dead. All she wanted to do was going into her room and relax.
"Hello, honey," Liz's mother, Mary, said with a smile. "Would you like a snack?"
"No thanks, mom," Liz replied, tiredly smiling back.
She saw that Eddie, her older brother, was in the living room watching TV as she walked by. Eddie didn't play any sports, though he did run, and he was still in his running outfit as he sat on the couch. She saw that his shoes and socks were strewn about and he had his bare feet up on the coffee table. With a frown, she saw that one of his smelly socks was on top of a book she was reading that was on the table, and she told him "Hey, mind getting your dirty sock off of my book?"
Eddie just grunted something. He was kind of the family class clown, but he meant well. "Here, you have it," he said, and flung the balled-up sock at her. The sock flew by, barely missing her shoulder. She just rolled her eyes and walked on.
Once in her room, Liz closed her door and bit her lip. She normally waited until later in the evening, but it was a long day and she decided to indulge a little. Liz had a size-changing fetish. Sometimes she pictured herself as a towering giantess, scaring tiny ant-people by pretending to step on them. Other times she imagined she was tiny, cuddling up on the chest of one of the guys she had a crush on at school. Today, Liz was in a small mood, and started to look up pictures of giant hands grabbing little women, or tiny gals hugging huge cocks. She felt herself getting hot quickly, and bit her lip.
What Liz really liked though was reading stories. She skimmed through a site she knew looking for something interesting, and came across one where a brother was playfully messing around with his tiny sister. Liz's mind wandered back to her brother throwing the sock at her, and she imagined him rolling her up in his smelly sock to mess with her. She didn't often think of her family this way, but it happened every now and then. Her father was a very strict man, after all, and in the rarest of fantasies she'd picture him laying down the law for a bad grade or staying out too late.
Just then, as Liz was reading the story, she began to feel funny. Like not sick, but almost like she suddenly had to burp real bad. She sat back in her seat with a strained look on her face and...