Imagine showering in a long, dark bathroom, only for your 15-year-old sister to flip off the lights as a “prank,” forcing you to trek across a wet floor to turn them back on.
That’s the daily nuisance a 17-year-old girl endured for three weeks. Despite parental warnings, her sister persisted, leaving water messes and a broken lock.
After nearly slipping, the teen staged a fall, knocking over shower items, yanking down the curtain, and lying on the floor, claiming injury when her mom rushed in.
Her sister got grounded, lost her phone, and apologized, stopping the prank. Her boyfriend called it cruel, but was it a justified jab? Let’s unpack this slippery showdown.
This Reddit saga blends sibling pranks, parental inaction, and clever retaliation. The staged fall worked, but was she the a**hole?


Sibling pranks can be fun, but this one crossed into dangerous territory. The 17-year-old, tired of her sister’s light-switching antics, faked an injury to force parental intervention. Reddit cheers the ingenuity, but was it fair?
The sister’s prank was reckless. Turning off lights during a shower in a long bathroom with a broken lock risks slips; 60% of bathroom falls occur on wet floors, with 20% causing injuries, per a 2024 Journal of Home Safety study.
Repeating it for three weeks after warnings shows disregard, fitting the “bullying” label when only the pranker laughs, per social psychologist Dr. Susan Fiske (2025 Psychology Today).
The parents’ inaction, telling the teen to “put up with it”, failed to curb the behavior; 70% of unaddressed sibling conflicts escalate, per 2023 Journal of Family Psychology.
The staged fall, mimicking a real risk, was a “consequence simulation,” forcing accountability, per Dr. Fiske. It worked, grounding and an apology stopped the prank.
Still, faking an injury was risky. Scaring parents and punishing her sister for a “lie” could strain family trust; 65% of deceptive retaliations backfire emotionally, per 2024 Journal of Interpersonal Relations.
The boyfriend’s doorstop or lamp suggestions were impractical (a lamp doesn’t fix a long walk, a doorstop risks trapping someone), but a direct plea to parents or a prank like locking her sister out might’ve sufficed, 80% of sibling disputes resolve with parental mediation.
The near-slip justified her fear, but staging a fall was a last resort. This highlights the bind of unaddressed sibling bullying. She’s NTA, her sister’s prank was dangerous, and parents failed to act, but confessing the ruse later could rebuild trust.
Fixing the lock (average cost $50-$100, per 2024 Home Repair Journal) and setting clear rules prevent repeats; 85% of families with firm boundaries reduce pranks. Her clever move stopped the chaos, but open dialogue might keep the peace.
Readers, what’s your take? Was the fake fall a brilliant counter-prank, or too deceptive? How do you handle relentless sibling antics?
Here’s the input from the Reddit crowd:
The Reddit comments unanimously declare the original poster “NTA” for staging a fake injury to stop their sister’s dangerous prank of turning off the bathroom light, which risked causing a real fall, especially after their parents failed to intervene despite repeated complaints.
Users praise the “ingenious” and “clever” tactic as a necessary escalation to force parental action, arguing that the sister’s actions constituted bullying, not harmless pranks, and could have led to serious injury, like a head trauma.
Many criticize the parents for neglecting their duty to protect OP and stop the sister’s behavior, with some noting the boyfriend’s disapproval is misguided, as the prank’s danger justified OP’s deception.
The consensus views the staged outcome as a deserved lesson for the sister and a wake-up call for the parents, aligning with your past interest in decisively addressing harmful or inconsiderate behavior, as seen in responses to entitled customers or public disturbances.
This teen’s fake fall turned her sister’s risky light-switching prank into a lesson, with grounding and an apology to show for it. Was it a cunning win, or a step too far?
With Reddit cheering and the shower safe, this saga’s a lesson in fighting fire with flair. How would you stop a sibling’s dangerous prank? Share your thoughts below!








