I don't think I should be telling anyone I watched this, but this Cinderella is an erotic (pornographic) comedy musical. It follows the basic Cinderella story with some slight alterations. They go as follows:

Cinderella works night and day, not necessarily to clean her step-mother's home--which is a shabby hut--but to power vibrating, gyrating corncobs that her evil step sisters use to... who knows what. The king is not looking for an heir, rather, he hasn't been able to get one up for 21 years because of his wife, the queen, and... that plotline goes nowhere. The king's son, a sexual deviant, is in search of some worthwhile takings, and such leads us to the royal ball... more from: