Naughty can be construed in various ways with respect to behavior. I assume you mean naughty in a sexual nature. We are all “naughty” to an extent. Even those who don’t act on it…thoughts cross the mind. It’s all about perspective. What is naughty and wild to one could be bland and tame to the next.
For me, I equate naughty with having a secret. Something only I and the other party knows about, but the world around us does not.