Ask Shelley. She knew. She knew a good many things, but best of all, she knew the secret of Wint-O-Green Life Savers and the blue sparks that crackled from your teeth when you chewed them in the dark. One afternoon, when her parents were in the living room, she took me into a closet in the basement. In the airless dark we pressed our bodies against each other, Life Savers in our mouths, and shot sparks across the gap.