Zui is a bad student that has to report for detention. When she shows up late the professor tells Zui to come back on time next week. Zui presents evidence she intends to use against the teacher unless he stops the detention. Of course Zui's feet are black and filthy, so she decides to make the professor lick them clean before she leaves. This is the full version of the full clip at 8 minutes 08 seconds.