I surprised my boyfriend by only wearing a sundress. My well-rounded breasts were clearly visible through it. Even though my boyfriend was sitting on the couch and wore shorts, his dick began to be easily seen by it becoming swollen.
I undressed his shorts and began to suck on his dick deeply and slowly, to make it engulfed with my saliva, making it easier to ride him later on. In exchange, my boyfriend began to explore my love hole. He just wanted to turn me on slightly, but with a sudden movement by me, he accidentally hit the g spot. I almost came but the fact that he quickly returned out of the hole made me not come to an orgasm.
Thus, I thought it was time for me to give him a ride. As I was slowly positioning myself on his dick's tip, I thought that it looked bigger than usual. Slowly lowering myself onto his pole only confirmed my thought. Has my boyfriend become bigger? But as I was too horny I didn't ask him the question. Instead, I was beginning to move in a circular motion around his huge dick and then started seconds afterwards to slide up and down on it... up and down... up and down...
As I was already near my orgasm, I increased the speed. But it seemed like I was barely reaching the end of the tree. After a few more swings I noticed that I was reaching even less of his penis. Hasn't he reached his full size already?
"My dear, haven't you shrunk?"
I looked in shock down and saw how my boyfriend's body was even bigger, meanwhile, it seemed like my breasts were smaller than usual. It was only a slight change, but now that he said it, it seems like I did shrink.
He however used the moment of surprise to move me into a doggy position and fucked me as deep as I had ever been fucked.
And then, I came. Like an explosion, feelings of excitement were filling my whole body. He began to cum as well. His love juice began to fill me up. I thought that it was an unusual amount of cum. But instead, his penis was stretching me more than usual. When I opened my eyes as I regained my strength, I saw how I lost a fifth of my body height! Not only was his cum now filling lots of my hole, but his penis also began more and more to stretch me. Out of fear of how I was continuing to shrink, I pulled his penis out.
"What is happening with me?"
"It seems like my medicine has worked."
"Medicine... What medicine?"
"Did you know how I made you breakfast even though I usually don't do it? I put a pill in the milk."
"You didn't...?! How long will it last?"
"The instruction said to take 1 pill for a day's worth. I dropped 3 pills in the milk for good measure."
"3 pills?! How will you know if I will regain my size?!"
"We'll see. For now, let's enjoy the moment... You know what? Take a bath. I'll prepare you some clothes to change in."
"Alright... I'll enjoy the moment and take a bath. I hope you got good clothes prepared for me!"
"Yeah, I have great clothes in mind. One last thing: As always, I have your consent, right?"
"Umm... yeah! Totally."
As I was still a little bit confused about the situation, I simply headed for the bathroom. After waiting a few minutes, I was sitting in the bath. I was a little bit surprised at how high the water was in the bath. I forgot that I needed less water as I was smaller in size. As I was in the hot water, I inspected my new body more thoroughly. I touched my nipples and noticed how more sensitive they were. As I was still horny, I began to move my left hand towards my love hole, starting to slowly rub the place. Mere seconds were needed for me to come. I was so surprised at how sensitive I was, that I let out a shriek.