Standing in the hall's he stops in tracks as he feels weird. Heather is standing at his side.
"What's the matter Ty?" Heather asks.
Right before her eyes Ty seems to be changing. His legs smooth out as his hair disappears. His hips widen at the same time that his butt expands a little. Then his penis and balls suck into his body forming a vagina and boobs that are C cup form on his chest. Then his hair grows out and is instantly pulled back into a pony tail. He now a she blinks a couple times.
Then he says, "Ty? Who's Ty? Silly I'm Tanya."
And there she stood naked with her boobs and vagina on full display to the rest of school, next to Heather.