"If I'm going to be a boy so are you!" Sammy tells Trini. "I wish Trini would become a boy and reality would change so everyone thought we were always male."
Nothing much about Trini's outward appearance changed much since she was only eleven and hadn't started puberty yet. her hair shortened into a boy's cut and gained a couple inches in height. The baby-Tee that her shirt had just become changed into a Batman T-shirt and her jeans went from a girl's cut to the more traditional boy's version. Her shoes and socks altered to that worn by boys.
As her panties changed into briefs, she felt an odd sensation in her stomach as her internal female organs transformed or vanished entirely, then a penis grew on her crotch with her labia changing into a scrotum and her vagina sealed itself as if it had never been there at all.
Memories entered both Sammy's and Trini's minds so they knew everything about their new male lives while still having their girl memories too.
"Wow," said Sammy. "This ring is amazing. My life is so different now. I'm dating my former best friend, Debbie!"
"And my name is now Trent," replies the former Trini. "And we're now buying me new boy's clothes." she looked at the clothes they had just bought and found the to have changed from the one they had selected. "Hey, they're no longer the stupid things you grabbed off the rack, earlier."