Just thought of another one.
You are now on circuit training and coming to grips with the landing. After rounding out move the stick sharply forward so that the instructor has just enough time to grab the controls despite the fact that the nosewheel has hit the ground with just enough force to make the instructor worry that you have bent something. This is best done after a few relatively well judged landings so that the instructor has been lulled into a false sense of security!