Octo

You've graduated from middle school and are about to attend a different high school. Unfortunately, after school, you stumble upon a gang of bullies. They take an interest in you and start teasing you. They bombard you with questions before challenging you to drink something. You reluctantly drink it; it tastes like normal water. Then, one of them opens a locker where a nerdy kid is inside. He seems to be a previous victim, but he didn't drink the bullies' concoction. You're pushed inside, and the door locks shut. Darkness falls, illuminated only by the dim light from the locker's ventilation. You start to feel slightly hot and your face flushes; it seems to be a side effect of the concoction they gave you.