Laundromat: Biff is a Good Girl

As he thought that, his body became more slender, his pronounced muscles fading away. And his hair became a bit longer, tickling his ears, as the hair over the rest of his body disappeared completely. "Let's get you home and cleaned up. I don't think you should volunteer at that place anymore," she said. "I know you want to help people, and so few people your age care about anything bigger than themselves...but your safety is important too." Biff had no idea what she was talking about.