The nearby kid, You had seen a short barely teenage kid awkwardly pace toward the nearby toilet building. A trio of presumably high school seniors or college aged girls giggling behind him as he scampered off with a slightly red flushed face. What drew your attention was the hump in his shorts that he tried to hide as he passed by quite close.
As if nothing happened you suddenly were looking toward the toilet building with a uncomfortable feeling in "your" shorts. You slowed down a bit and you felt the warmth of the "your" flushed embarrassed face. As soon as you entered the and noticed nobody was there you unbuttoned and shoved your hand into ''your'' underwear. You stretched the underwear further as you grabbed the warm thing in your hand. It felt quite big in these hands. You lift it out and look at it a little disappointed yet amazed at the same time.
It's size was indeed something to behold. It was very long, certainly at pretty hard as well. Nonetheless in terms of thickness it wasn't as impressive. You were thicker than this hard in your own body but then again this body still had plenty of years to grow. It also didn't look like an adults cock quite yet with being pretty much skin coloured with likewise balls but that would certainly change soon as well. You looked around for a mirror to see how it would compare to your current body but sadly there was nothing of such around. You looked around for something to measure with and find that the toilet paper has been uniformly perforated. It's size was almost two parts long, incredible. That it would be about 8 inches, you guessed, underestimating it.
You ponder getting some privacy but the toilet cabins stunk. You shrugged and with dick in hand walked to the urinal. It was time to give this cock a test run. Running your dominant hand along "your" sensitive shaft, you could hear an unfamiliar moaning noise come out of "your" own mouth. You thought about the hottest of the three girls that had teased the boy. You felt a churning sensation running down "your" shaft and to "your" balls. Almost painfully hot semen shot from the tip of ''your'' penis and then another. Still leaking a little you huffed out of breath but disappointed in how quickly you had come. This body certainly didn't take much to come.
"well, I've had my fun, time to go back to my own body." You then realise the stone is still with your original body. You "sigh and shove the warm sensitive still semi-hard dick into your shorts and uncomfortably make your way to were you left your body. To your surprise your body is talking to the trio of girls. He walked to the spot were your body had sat down ignoring your body talking to the girls. There was no stone. You glared at your body, it couldn't be? You walked up to your body uncomfortably looking up at it. "Uh, have you seen a stone?" Your own face turns toward you. "Bugger off, kid."