Loophole Abuse

Kate was bored.

There's nothing good on television to watch and her parents were away for the weekend. She would usually expand at this point, but the last time she did that, her inflated form caused thousands of dollars worth of damage. She inadvertently broke the chandelier and knocked over some books, shelves, and lamps.  The situation got out of hand when Kate's parents walked in on their daughters current inflated form. Normally they had no qualms with their daughter expanding herself, but Kate's parents do discourage the practice of inflation indoors. The whole ordeal got her grounded for about two weeks, which is why she is currently in this scenario.

Feeling that there was not much to do, Kate walked over to the living room and bury herself within the couch. She then sulked and slouched until a plan formulated in her mind.  They said that she couldn't inflate, but it wouldn't count if Kate does not get caught. The young girl then sat up and gave a smirk. These two days were going to very special to her.

The garage was the perfect choice for a quick inflation. It could store two sedans, which means that Kate can expand without reaching the ceiling. She observed the spacious location and decided to place herself in the middle. If her calculations were correct, then Kate will take up most of the garage when she inflated. The young woman grabbed an air tank, turned the knob and placed its air hose in her mouth. Without any interruptions or further ado, Kate's body began to expand.
Inhaling air was like muscle memory to her body. It started to expand without signs of complications showing. Instead of going to her thighs or breasts, the air stared filling Kate in her stomach. Bypassing the fertility comparison stages, she already had begun to form into a human ball. Arms and legs became one with Kate's body as the girl's body continue to defy the laws of reality and grow some more. Once the tank ran out of air, Kate was estimated to be at least ten feet high. She still had the air hose in her mouth, just in case she wants to give the air back. Upon feeling full and content with her size, Kate inadvertently fell asleep while expanded.

A blue sedan was trying to enter the garage, but something is blocking its entrance. The driver repeatedly rammed into what appeared to be a very pink net. Upon further observations, the passenger suggested that it looked like someone's underwear. They argued on whether or not it was indeed undergarments, but once they heard a shriek of pain, it was agreed that this is someone's underwear. The couple had pretty good hunch of which they belonged to. Kate woke up when the door to the garage was opened and saw that her parents had come home earlier than expected. She then gave a smile of embarrassment and said

"So Mom and Dad, how was your vacation?"