When William Potts (Will Hay) first meets his students, he does a roll-call. One of them answers to the name "Schicklgruber", causing Potts unease, and glancing up at the portrait of Adolf Hitler. Hitler's father was born Alois Schicklgruber, and later changed his name in order to reflect that of his stepfather.
William Potts:
It's the truth, the whole truth and nothing but the truth, so help me Goebbels.
During the flying of the plane near the end, when they are trying to control it, in one sky shot the camera spins round, rather than the plane itself.
English