The shaggy looking lad with a pelt over his shoulder." the medium just smiled.
There was a moment when your eyes were out of focus, and then you were dazzled by the light. It was just a moment and then you recovered sight, it was noon, the sun was on your face, and you seemed to be on a dusty plain, near a mountain range. You walk around a bit, confused on your current location, and then you realize that you are barefooted .You look down, to confirm it and discover, that you are not only not wearing shoes, but basically no clothes at all, you see your body. It was muscular and thick and a lot more hairier than you actually were. Alarmed you feel your face, you have an a growing beard stubble and long hair, also you had a crude knife, really a sharpened stone on your hand. There was something on your back, it was even hairier but it felt different. It was a pelt, the day was chilly and that was your only clothing, despite being effectively naked, you weren't embarrassed (much) by it, you cock had gained in thick and was quite long, as your balls.
Somehow you knew it was better not to stay there and that you should walk toward the forest. Why did you had to, you weren't sure, but you made haste, your large penis bobbling as you jogged.
You ran until you found a bonfire at the entrance of a natural cave, around it there were three persons, all naked and filthy, their hairs tangled and unkept. Two women with large breast and a very muscular frame, with wild hairy armpits and pubic, and another man, he seemed a few inches shorter, a littler bulkier. Despite their appareance you knew they, and you by extension, were older teens.
The young man looked at you and shouted at you. "Kossa! No hunt?"
You shook your head, you were supposed to bring the meat and you didn't. Something, struck you odd, or more odd than what had happened until now. He didn't spoke english, it was barely guttural noises by all you considered. But you understood it, and perhaps even knew how to speak it. "No luck." you replied.
"Kossa bad hunter. I go tomorrow. You stay, protect womans."
"Come Kossa, eat berrys. Toma upset, he likes hunt." said one of the woman handing you a bunch of berries.
The other got closer to you and sniffed your hairy chest. "Good you be back." while she took off your pelt.
There was no doubt you were a caveman. You sat buck naked with them around the bonfire.