The main purpose of this digital product, as with the analog, would be humor. I like writing comedy, though I rarely do (because it's hard). I think this generator could be pretty funny. For the two serious topics ("How to play the violin" and "Welsh") the generator would probably spit out links to videos of complex examples of the two. Beyond humor, this generator, I believe, could give food-for-thought for some of the great, funny questions of life. And, heck, doesn't everyone wonder where the socks go? Maybe this generator could one day aid in this Grailic quest.
I'm not quite capable, at this point in time, of making this self-generating teacher, but I hope to be able to make it some day soon. Python is one candidate for software, and there are probably other programs I don't currently know of that would work well too.