fly like a rock

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fly like a rock

  1. (simile, sometimes sarcastic) to travel through the air with little or no benefit from aerodynamic lift
    If the wings aren't big enough, your paper airplane will fly like a rock.
    • 1970, American Association of Physics Teachers, The Physics teacher, Volumes 8-9[1], page 541:
      When students have compared the wing areas and weights by squaring and cubing the linear ratios, they correctly predict the large one will fly "like a rock"...