I came across this video a couple of years ago. Can't think why I haven't posted it already.
This will appeal to anyone involved with driving instruction (giving or receiving) and pretty much anyone else besides!
I should warn you, it contains foul language, but even my parents weren't offended by it.
http://www.teamfishcake.co.uk/godriveyourself/teamfishcake-GDY-high.avi
ENJOY!!