"Hehe, this is fun!" My boyfriend giggles, or well, more specifically my boyfriend's body giggles. I have no idea how or what happened but my boyfriend got body swapped.
Worst part, it happened mid sex!

"Wow, my penis feels great inside you mister! Hehe, I feel so strong too! It's odd having so much hair, now I'm even hairier than my dad! I kind of like it, makes me feel like a real man!"
I try to move away, almost managing pulling my boyfriend's cock completely out of my ass. Bad move it seems, as he grabs my hair and pins me down and slams my boyfriend's cock back inside me again. In shock I only manage to moan loudly.

"Nuh uh, mister! You are not going anywhere! We are going to keep playing until I say so!" Says the person in my boyfriend's body angrily.
"W-Wait, I- Ahh!" I try to say something but got interrupted by him starting to thrust his new cock mercilessly inside of me. Pretty much making me lose my train of thought and start moaning.
"That's right mister, I'm the one in charge now! Hehe!" He says while we keeps a grueling pace.
Shit, this actually feels great.
"Ahhh! This feels even better than the toys from my big brother! I no longer have to sneak around to use them, now I could buy some for myself! I'm all grown-up and probably have my own money too! I could get whatever I want! Or maybe I will just keep you as my personal toy too! So I can fuck you whenever I feel like! Hehe, I can say fuck without my stupid dad saying anything about it. I'm more of a man that he is now!"
Oh no! I'm pretty sure a teenager is the one on my boyfriend's body. Well danm, must have been quite the change. Specially consider how muscular and tall my boyfriend is, he must be in cloud nine being in his body.
"In and out! In and out! Hehe, my penis is soo big now. It's fun seeing your butt swallow my big cock! By now I would have cum inside my brother's toys but now I feel like I can go for hours! Let's go a bit faster mister!"

O-oh, fuck shit he is actually very good at this, the fuck. He keeps thrusting strongly and fast. I always loved an aggressive fucking but my boyfriend had never manage to move just quite fast and forceful enough. Or mostly just interesting sex, he is not bad just... a bit disappointing with how big his cock and how strong he is. Just wanted better sex.
It all took the horny mind of a teenager inside his body to get there. A bit funny that a teen is giving me better sex than my boyfriend ever did. At this point I'm probably going to let him keep fucking me as much as it pains me to say.

"Hehe, but don't worry mister I will make sure you come too, eventually after I have my fun of course. You deserve a nice reward for taking my huge penis so well!"

Even more considering than my boyfriend in bed, well, I be damn, maybe this won't turn to be a onces and done situation.

"Uh, you seem distracted. Then I need to fuck you harder! Let's see how fast I can go in my new body!"

"F-fuck, ohh! W-ait, go sl- Ah! I-I will co-! Ahh! Fuck! S-shit"
I scream while the teenager in my boyfriend's body manage to squeeze an orgams our of me. Making my mind turn blank and be able to nothing but whimper and moan pathetically.

"Did you just come, mister! Hehe, so embarrassing to come so easily. It's not even fair, I haven't come ones! Now be good toy and me play as long as I want to!"

Moan as a response feeling overwhelmed after my orgasm while we keep fucking me with all the strength and vigor my boyfriend's body poses. Well fuck, I may not even survive to see if there is a next time, that teen is a beast. Hopefully he doesn't break me too much...