cool beans

  1. A humorous and lighthearted nonsense phrase indicating approval or mild excitement: okay, sure.
  2. A phrase meaning “great” or “that's remarkable”: wow.
    • 1978, Cheech Marin; Tommy Chong (Cheech & Chong), Up in Smoke, written by Cheech Marin; Tommy Chong, Los Angeles, Calif.: Paramount Home Video, OCLC 79631167:
      Cheech: “Hey man, look at this car made out of weed!” / Chong: “Oh cool beans, man!”
    • 1985, Marlene Fanta Shyer, Grandpa Ritz and the Luscious Lovelies, New York, N.Y.: Scribner, ISBN 978-0-684-18408-1, page 30:
      ‘It’s cool beans!’ That’s what Betsy always says when she thinks something is fantastic, and I couldn’t help wondering what she’d say if she could see me now.