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Mad Science

Borrow a big cock to fuck your boyfriend

Well, the first attempt was unsuccessful. But you've seen the ring's power, so you'll give it a second try.

Once again, you put the ring on your package. This time you write the word "big" in the application. With apprehension, you click the "swap" button. At the same time, on another continent, a well-endowed man uses the StarDust ring having written the word "circumcised".

As before, the ring emits a faint flash of light. A sharp pain startles you just as much, then disappears as it came. Now another dick is encircled by the ring between your legs.

"Wow!" you can't believe it.

You are amazed to discover a larger penis. Flaccid, it's 5 inches long. Even crazier, a foreskin encloses your glans. You're getting hard in front of your boyfriend's starry eyes. Once hard, you squeeze a thick 8 inches cock in your hands, accompanied by two big balls glued to the base. You notice that the ring has widened to avoid crushing your package. Despite this, you are still tight and cannot take off the ring while you are erect.

As earlier, you feel the touch of your hand as if this member is part of you. This ring is almost magical! You play with "your" cock and note the exchange does not stop. You have no idea what physical characteristic the owner of this dick was looking for, but you're relieved that he's keeping your dick for now.

While you're lost in thought, your boyfriend pulls your hand away and grabs your cock with both of his. He gets down on his knees and starts sucking you off. You are now experiencing the sensation of blowjob with a foreskin. You are not used to it so you are embarrassed at first. But thanks to your boyfriend's expert tongue, you get used to it and start liking.

Your buddy has more trouble than you in this experiment. This borrowed cock is thicker than yours. He can't swallow it whole. Too bad for you. And after five minutes of a very noisy blowjob, you offer to bugger him. Surprisingly he immediately accepts.

You go to your room together. He prepares his anus for what he is going to receive. You put a lot of lubes on your big cock. Alexis gets on all fours on the bed. For the first time in your life, you pull back your penis's skin to expose your large head. You stick it against his hole and slowly push. Alexis lets out a long moan as you enter his ass, inch by inch. Once fully inserted, his eyes widens and he lets out a loud "Whew". You are over the moon. You gently slide back... then push forward, a little faster.

Alexis grabs a pillow and bites it to stifle his pleasure's moans. You accelerate. Your boyfriend screams into the pillow. And suddenly, only few minutes later, you feel his ass tightening on your cock. A quick orgasm has just invaded him as he starts ejaculating on the bed. You slow down the movements and hold his hips as his dick spits out streams of cum. You are happy to make him come so hardly and quickly. But you haven't had time to enjoy yourself. You want to continue fucking him but he begs you to take a break. He collapses, face down on the bed, letting out small moans. You flip him and kiss him.

- "Give me one minute... no... five minutes" your boyfriend says.

You clean your cock. Then you clean the bed with paper towel. Meanwhile, you soften and walk with a flaccid 5 inch penis still clamped by the ring. The swap still stands. The other man hasn't taken his ring off and must be having fun with your dick. Wondering what he can do with it?


What do you do now?


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