What does wax on wax off mean?

What does wax on wax off mean?
This was a phrase from the movie KARATE KID. The teacher taught the kid how to do major karate moves by waxing the car. He used his left hand to put on wax in one direction and used the other hand in the other direction to remove the wax. When the kid questioned the master that he wasnt being taught karate the master asked him to show him WAX ON WAX OFF.
The technique is known as the Kagite uke or circle block. It is a very effective block that provides a good lead in for follow on techniques.

Um...That may be true but...
Okay, so maybe they didn't mean it like this but having been one of those TV writers myself, who used to love to slip in double meaning in otherwise PG shows this just hit me the other day:
Wax On/Wax Off...
Keep saying it to yourself and think about the second part.
Maybe I'm just a twisted soul but...