### Clue: Old film star that Banksy might do in a toilet? (6)
### Answer: BOGART 
 ### Explanation: Definition: Old film star
 Cryptic defn: The stuff Banksy, the graffiti artist might do in a toilet/bog in British slang.
You must remember this …
"Play it, Sam":  … and again, "Play it, Sam":  … and not "Play it again, Sam".