Unacceptable behaviour displayed by Italian danseuse — cute and naughty — on vacation around Cuba (9)
I believe the answer is:
indecency
'unacceptable behaviour' is the definition.
I don't understand how the rest of the clue works.
(Other definitions for indecency that I've seen before include "Lewdness" , "Improper behaviour" , "affront to modesty" , "Act of gross immodesty" .)