...a boy!
Jon looked down at himself...and he looked exactly as he had not more than ten minutes ago. Still wearing the sports bra and tank top with the spandex shorts... but a boy. Without seeing his reflection he felt that he was himself again and he was very pleased.
"That's right class, Joan is now a boy!" the teacher announced. The glass tube opened and the boy named Tim walked up to Jon.
"Joan... wow... you're a guy!" he said in amazement as Jon looked around confused. A girl came up to Jon next, she was one of the girls on the cheer squad, Melissa.
"Oh Joan... I'm sorry for you! Being changed into some icky boy for a week as part of a science project... I... I just couldn't imagine how awful this is for you." she said afraid to even tough Jon.
He realized now that even though he was a male again, everyone still thought of him as a girl.