This is a tease for foot fetishists who think they might be able to one day serve a real Mistress. *BUG FIXED, SORRY* NOTE: Though it says "chastity-belt" in the tags, you do not NEED one for this tease.
You tell one of your students to stay after class so you can tell her she is failing. But she is none too pleased with this! How does she get back at you?