In which 1986 film does the hero, confronted by a mugger with a switchblade, say "That's not a knife. That's a knife"?

In which 1986 film does Principal Rooney have a very bad day and a Ferrari meet a bad end? In 1986, which future presidential nominee won the Arizona Senate seat of retiring Barry Goldwater? Which British royal married Sarah Ferguson in 1986 and divorced her in 1996? "Somewhere Out There," performed by Linda Ronstadt and James Ingram, came from which 1986 animated film? Who co-wrote the 1986 No. 1 hit "That's What Friends Are For" with Carole Bayer Sager? Which Bangles song, released in 1986, became the band's first U.S. No. 1 hit? Who became Chief Justice of the United States in 1986? In which 1986 film does William Hurt play James Leeds, a new speech teacher at a school for the deaf?