"Your hour has begun, slave. Text me every time you feel the pattern stop." Mistress Wilma texted me. Her anal training of me had been going on for several weeks now. I was in a silicon rubber chastity device with a numbered seal lock so she could verify that I had not removed the device without her consent.
I inserted the internet remote controlled Hush butt plug as she had instructed. It was not the largest plug the company made, but it was larger enough that it took me fifteen to twenty minutes to insert it in my tight asshole the first time I used it. Initially I had to lie down on my side to get the plug in. Lately, the weeks of anal training were paying off and the insertion process went much quicker and smoother. Once the largest girth was inside me, the thinner stem did not make my sphincter ache. The plug's vibrations could be operated by an application that Mistress Wilma had installed on her phone.
"It is in, Mistress." I texted her.
"Good slave." She texted back.
The vibration began immediately, and my phone showed that it was a twenty-minute pattern that she had initiated. The intensity gradually became stronger and then ebbed, radiating quivering sensations throughout my buttocks and causing my cock to drip pre-cum. Mistress Wilma had instructed me that I was not allowed to cum unless she explicitly instructed me to do so. My cock tried to swell up in the confined space of its rubber cage, the meat of the shaft trying to bulge through the small air holes along the device.
I writhed my ass against the Lazy-boy chair seat, trying to accommodate the vibrations and the feeling of fullness against my prostate. After a while, my writing became more rhythmic and I was humping the chair with the part of the plug that was external, making the vibrating portion inside of me swirl around and rub my colon and my organs internally. The vibrations would occasionally reach a crescendo and cause me to jostle and wriggle.
Mistress Wilma had been training me ever since I had asked her if she would be my keyholder. We had met online via a BDSM "dating" website, and I had approached her to see if she might be interested in using me for her amusement. She had a long-term plan in mind: after suitably training me and having me prove me devotion and worthiness, she would allow me to be her servant and driver for a local outdoor festival for her birthday. She told me that since I lived several hours drive away from her, that I would be allowed to stay overnight the night before the festival and would be allowed to participate in a play party she was having the night before the fest. She told me that I would have to be chained to the bed in her dungeon when she went to bed, and text her as soon as I woke up. I would be expected to wear the butt plug while serving her and her guests and allow them to use the remote whenever they felt it would be fun.
The vibrations in my ass faded and then stopped, and a check on my phone showed that the pattern she had sent was complete.
"The pattern completed, Mistress." I texted her.
"Good boi." She texted back. Another pattern was sent, this one more intense and sustained. I checked and saw that it was for ten minutes.
I tried to watch the "Game of Thrones" series that I was binging. I could follow the story for a little while when the vibrations let up, but as soon as they went wild, so did my concentration. My cock was making a puddle that leaked from the end of my cock cage. The cage had a hole in it at the end to allow one to pee (sitting down, of course) and this also provided a conduit for leaky cum emissions.
"I am leaking, Mistress" I hesitantly texted her.
"Scoop it up with your finger and eat it, boi!" She replied.
I did as she instructed and was getting used to the taste after so many sessions. She had me use the plug for an hour every other day. I appreciated her attention and the promptness with which she kept track of the time and would tell me to remove the plug after the hour had elapsed. I also loved that she would do random spot checks on me and send her a picture on the chat application we used.