you wana swap what?

i put my hands on the wishing rock, "i wish for the next week me and karen will have the other sexs chemicals.so for a week karens body will produce sperm while my body will produce eggs and have periods." Karen gave me a look, i watched her body it was odd her musles become more difine. like she can bench as much i can or i used too. I wondered what happned to my body.