Had quit a few classroom-educated punks walk though here that couldn't change oil without screwing something up or asking questions. We have fun with some of them, though, the shop foreman and I enjoy some comic relief from time to time a their expense. He'll send fresh meat my way to ask for something like a can of "Blue Compression, not the red kind" so they can put the compression back in the engine after putting the cylinder head on, or a can of "white IC smoke" to repair ECMs or other modules. I have a jar full of little squares of paper printed with ones and zeros and a Deutsch diagnostic link connector and cable connected to the lid...it's for reprogramming modules. You know, just shake the jar and get the code in there.