What is "boeing-boeing"

Boeing-Boeing is a classic farce written by the French playwright Marc Camoletti. The English language adaptation, translated by Beverley Cross, was first staged in London at the Apollo Theatre in 1962 and transferred to the Duchess Theatre in 1965, running for a total of seven years. In 1991, the play was listed in the Guinness Book of Records as the most performed French play throughout the world.