"I like this" Karyn said as she made Jon's body get the stone. "I wish I could explore this for a while." she felt the tingle, she'd be stuck for a bit.
"you... you can't do this" Jon said.
"why not?" asked Karyn.
"two minds in one body, that is why?" Jon replied. "remember biology class, brain cells make connections as new behaviors are learned, the connections spread until they become normal. your female mindset sharing my male body will re-enforce your female behaviors, our personalities may even merge into a single one." He looks down. "likely one with my body image but some of your feminine memories and behaviors."