This pet name seems to annoy Linus. Almost any time Sally mentions that Linus is her Sweet Babboo, Linus screams, "I'm not your Sweet Babboo!" no matter whether or not he is visible in the strip or on screen. Once, when Linus was not around, Sally mentioned something to Charlie Brown about Linus being her Sweet Babboo, and Linus called her over the phone, and told her "I'm not your Sweet Babboo!".