Nadine grabbed the note. Not because she wanted to read it, but because her curiosity of the "magic note" outweighed her common sense.
And when the note got close enough to her, Nadine felt compelled to read it. "I wish that the last person who teased me would become whatever they called me."
Suddenly, Biff felt strange. And Nadine knew why. Biff was the last person to tease her. He called her a "witch". And that was exactly what Biff was transforming into right now.
