To push into this territory, there would be more focus on one aspect rather than making it too technical for myself to pull off. The idea brought up was that of fully modelled and rendered stills, which go through the alphabet, similar to perhaps the style of which Sesame Street may have used.
- Big Bird from Sesame Street, holding the letter "H".
This could easily be changed to create a rather sadistic, cringe worthy yet amusing short - which doesn't have to involve full animation. I believe it would work using some animation in parts, however keeping it brief and focusing more on the visual comedy being brought across.
Flipping the innocence of this technique for teaching children how to spell would be connecting each letter with humorously offensive material. This video is somewhat comparable to the concept of the joke: