A good one was the fact that a wing develops lift because the air over the upper surface has to go faster in order to meet the flow over the lower surface.
I hope none of you ever meet the lady I ended up having to teach fairy lift theory to because she really didn't get aerodynamics. Scary thing was I ended up nearly believing it myself as we didn't hit a single thing you couldn't explain using fairy lift theory.
adgd its any input in ailerons which does it, for the first 2 months demoing stalls I too had a wing drop on the tommy, 200 hours later it suddenly stopped doing it while the students continued to wing drop.