Two weeks into her gym membership, Karen began her plot. Karen knew Kathy would arrive at 4:30 so she snuck into the locker-room at 4:00 pm with a special bag full of items.

First, Karen snuck down to the locker that Kathy normally used for her clothes and started unloading the contents of her bag. In the locker, she put a stack of three underjams diapers, a bra, and a dress that was obviously big enough for an adult woman. Then Karen put the packaging from the Underjams in a neighboring wastebasket.

Karen then returned to the parking lot and waited.

When Kathy arrived, Karen followed her into the locker-room.

“Hey Kathy, oh it looks like someone is using your locker.”

Kathy, “Do you think they’ll mind if I move their stuff, I always use this. Hey, what are these. Are these diapers?”

Karen then casually noticed the underjam packaging in the wastebasket. “Hey, what’s this? Are those diapers for a teenager? Look at this packaging.”

Kathy examined the underjams packaging and looked at the pictures of the adolescent girls. “What. Oh that’s ridiculous. Well I never.”

Karen waited a few days and then had some more fun with her sister. She took a wet underjam and left it in the bottom of a locker. “Hey what’s this. Oh, it looks like someone had an accident.”

Kathy, “What kind of grown women is peeing in a diaper like this?”

Karen now had Kathy spending most of the time in the gym staring at other women’s butts to look for signs of diapers. It was highly amusing to manipulate her sister like this.

A few nights later, Karen put on a diaper and then put on a pair of tan slacks. Next, Karen peed in the diaper until it leaked and made a wet stain in the back of the slacks. The next day, Karen waited for Kathy to enter the gym and then snuck back by Kathy’s car. Karen then took the slacks and the wet diaper and threw them casually on the ground. For fun, Karen also decided to start peeing her panties to leave a little trickle of urine on the sidewalk leading back to the car. She was wearing a skirt so no one could tell she was wet, except for the trail on the ground.

Unfortunately, this plan did not work so well. Kathy was utterly oblivious, and Karen felt a little silly as she tried to set her up after their workout. “Hey, it looks like there’s a wet pair of pants here. Did someone wet the diaper enough to wet the pants?”

Kathy, “That’s gross. Don’t touch that. Let’s go home.”

As fun as it had been placing items, it still wasn’t Karen’s dream adventure. To live her real fantasy, Karen felt like she’d have to pee her pants in front of her sister and get her sister’s reaction.

She tried experimenting in the gym. Karen spent lots of time drinking lots of liquid and tried to set up a situation where she could have an accident. But it wasn’t possible. There was always a bathroom somewhere nearby. If only she could stage an accident Karen thought to herself. But she couldn’t figure out how.

If only she could go back to the Pier in San Francisco. She’d pretend she couldn’t hold it. She’d pretend she wet her pants. She’d stage the ultimate accident and get her sister’s surprised reaction. But San Francisco was years ago and miles away.

Try as she might, Karen couldn’t stage the big disaster she wanted. She couldn’t even picture it. How could she get the adrenaline rush of doing something completely naughty? How could she get the reaction she desired?