In your older sister's room, on the weekend

Your older sister Caitlin came out as a lesbian in freshman year of high school. Your parents and you were generally accepting of this, but it almost seemed sometimes like she was expecting more resistance on her way out of the closet. She treated it as the first salvo in a rebellious offensive against the perceived authoritarianism of her family and the world at large, and it was followed up by piercings, hair dyed black with red highlights, and terrible modern grunge music.

But now, emboldened by your mysterious new power, you intended to instill a little discipline into her, an inch at a time.

When you let yourself into her room, it was at just the right time. She was on her belly on her bed, with her headphones on and looking at some violent alt-comix. Whatever garbage band she was listening to (seriously, if you were going to be a teenage rebel, at least listen to good angry music), was blaring into her ears loudly enough that you could hear the higher tones, tinny and quiet, from across the room. She'd long ago papered over her baby-blue painted walls of childhood with as many posters as possible, to change her room's aesthetic without getting permission to actually repaint the walls blood-red like she'd prefer. The glossy, printed wild eyes of a dozen-odd grungy-looking band front-men-and-women appeared to be looking down at her scantily clad body. Since it wasn't a school day, she hadn't bothered to leave her room or even get properly dressed yet. Her thin grey camisole and black silk panties (emblazoned with 'Bad Pussy,' for some reason- perhaps a gift from a girlfriend?) clung to her skinny body. With her short spiky hair, thin build, sharp but girlish features and rough attitude, Caitlin was the perfect picture of a butch dyke. But apart from that being cute in its own way, for such a slender girl she was notably bottom-heavy. The 'Bad Pussy' logo on her butt was stretched to near illegibility by the size of her cheeks.