Hilariously!

As Mark unfroze time Ashley's head shot up and her eyes snapped open. She looked down at her body to find that she was clothed and laying back on the couch. It was then that she felt something liquidy slide down her throat. This caused her to start having a coughing fit. Mark had to immediately stop time because it was too hard to resist bursting out laughing. Rolling around on the floor Mark couldn't contain himself. After a little bit he was able to settle down and compose himself. He decided he should probably enter the scene now so he put his winter coat back on, grabbed his backpack and went outside to the end of the driveway. Starting time again he walked to the front door and went back inside.

When he entered the house he shouted out, "Hey, I'm home!". Throwing down his backpack by the front door he went into the living room. He found his sister sitting up on the couch looking confused. She was also touching the spot on her cheek where he had left a sizable amount of cum. It seemed that she felt some sticky residue. "Oops, looks like I missed some," he thought gleefully to himself.

Looking at her he asked, "Hey, you alright?"

Looking up at him, Ashley responded slowly, "Yeah...I guess I just dozed off and had a really weird dream."

Mark realized that as long as his "fun" with his sister didn't go too overboard he could probably get her to rationalize anything that might happen to her. He decided that not only would he use this power to mess with her physically but he could mess with her mentally and maybe even emotionally as well.

"Alright, well I'll be up in my room," Mark said leaving his confused sister.

In his room took her thong out of his pants and stowed it in an old shoebox under his bed. Next he took the camera and saved copies of the pictures he took onto multiple devices. "Just the beginning of a beautiful collection," he thought to himself wickedly.

It was then that he thought of another experiment to try out. At his computer he found an online stopwatch that measured in milliseconds. Pressing start, he cringed to stop time. The stopwatch read 0.547. He wrote down the time. Starting and stopping time again it now read 0.932, he was getting quicker. Marking down that time he continued until the time increased by .005 seconds every time he started and stopped time. Mark was happy with these results as he realized he could stop and start time and stop it again at a rapid rate. He'd certainly have to find a practical use for this.

At his desk, he opened up a Word file on his computer and began typing out his observations about the world when time was stopped and his abilities.

1. My interactions with someone while time is stopped will still be felt once time starts again. (Examples: Slapping Ashley's ass resulted in her yelping and assuming my attentions given to her tits, pussy, and ass were the cause of that slutty moan.) More tests not needed but desired.
2. It seems as though some objects (sink, camera) are functional so long as I'm contact with them. Other objects (water, jizz) will function with normal physics until they're out of my general contact (water stopping after coming out of faucet, jizz stopping and clinging to Ashley's face after I've cum)
3. I have an incredible fast stop and start reaction time. Must find a use for this.

Deciding he'd add to the list of observations as he discovered more through experimentation, Mark saved the file and opened a new one titled "Ideas for Abilities".

1. Shave Ashley's bush. (Record her reaction to finding out she's completely shaven)
2. Find ways to mess with Ashley mentally and emotionally.
3. Fuck her every which way.
4. Time Bukkake
5. Explore opportunies outside of just fucking with Ashley

Mark looked at number 4. Seeing her face splattered in his cum had turned him on. He wanted to explore the idea of stopping time for long periods of time (relative to him) and continuously jerking off on her face and body. He'd keep time stopped while he allowed his balls to make more jizz and then cover her again. Smiling to himself, he knew that kind of project would take a lot of out of time time but the pictures and recording he'd get of his cum drenched sister would be well worth it.

Satisfied with his work, Mark saved the file and turned off his computer. He went over to lay on his bed and he just relaxed thinking about all the fun he would have with this ability.