The words "Inverse gender roles with gradually changing bodies" were etched into the stone. "Huh, yeah I can see it." Says Tanya right away. "You always tend to be the more submissive one durring sex. Not that there is anything wrong with that. It just makes a bit of sense is all."
"Haha! Dude, I wonder how long it will take for you to have tits the size of Tanya's?" Laughed Max. Tanya wasn't small by any means, nor were her boobs gigantic either. They were respectable C cups, that could pass for a D if she wore the right kind of bra. "Likely the same amount of time it takes for you to grow a pussy!" Counters Tanya, reminding Max that this will effect everyone, and not just you.
Max stopped laughing when he heard this and tried to play it off while you and Tanya now were the ones laughing. Max just slapped his hand on the rock. After waiting a second he lifted his hand and revealed his own deepest fetish...