### Clue: Probably have this after striptease class (6)
### Answer: LESSON 
 ### Explanation: Definition: class
 LESS ON(having fewer, probably, or no,most likely, items of clothing on after a striptease).**
Perhaps a reference to the movie dialogue:
Crabbin: [inviting Holly Martins to give a lecture at the local Cultural Reeducation Society] We do a little show each week. Last week we had "Hamlet." The week before we had… something.
Sgt. Paine: The striptease, sir.
Crabbin: Yes, the Hindu dancers. Thank you, sergeant.