paper airplane
n.— «Airbus so far has failed to win over British Airways, a loyal Boeing customer. BA declined to place an order for A-320s two years ago, saying it didn’t want to order a “paper” airplane.» —“Airbus Buoyed by Hefty Order Book for New Passenger Plane” by Lawrence Ingrassia in London, England Wall Street Journal July 10, 1985. (source: Double-Tongued Dictionary)