...that the fairy looks bigger. You can see clearly that she's a woman, scantily dressed in a flower-petal dress and dragonfly wings beating behind her. Long pink hair is pinned up in to pigtails on either side of her head. She smirks at you. She also seems to be getting bigger, as is everything else.
"I'm shrinking!" you cry out.
"You're smarter then you look. But we'll fix that." she flies up and kisses you on the nose "In a bit you'll look just as smart as me.
You worry about that comment, but worry more about the fact that your bones and flesh seem to be shifting. Your hips get wider, and your belly gets thinner. Your pectorals shift as well, expanding outward, but drawing inward, becoming round. You then feel your insides shifting as well. Your manhood disappears and is replaced by an opening. You'd turned into a woman, but the look on the fairy's face tell you she wasn't done.
As you continue to shirk you see a mop of green hair flop down over your face. You push it out of the way and find that your clothing looks entirely different. It, like the fairy's, is a flower-petal themed dress, only green rather then her pink one. The last change you feel is a bulge forming and some slight pain as a pair of wings push out.
"See now you look as smart as me." She says
"Why did you do this?" you ask.
"For a lot of reasons. One, I wanted to reward you for freeing me from that jar. Two I wanted to punish you for calling me a firefly. Three, I thought this would help you learn the difference." she smiles.
"Turn me back." you say with a pleading voice that you don't even recognize.
"Mmmmmnope." she says "But I'll show you around. C'mon move those wings!" She says and grabs you by the wrists and pulls you into the air.