"You looked like you wanted to jump his bones right there!" "Jump his bones?" Sadie frowns. "What do you mean?" ..."It's like a pajama party. Except you take off your pajamas." "Oh that." Her face clicks with recognition. You call it 'jumping his bones'?" "Sometimes." I shrug. "What an odd phrase. We used to call it sex." "Oh." I say, discomfited. "Well we do too-" "Or barney-mugging," she adds."