what is the secret habit ?

Answer 1

The only secret habit of a person is committing a sin. I think no one wants to tell anybody about ones intention to commit a sin. Therefore committing sin is a secret habit. Sin induces pleasure in the doer but it is a wrong pleasure. Deep inside the person, he/she knows that it is wrong and yet he/she does it - and it is usually done in secret.

Answer 2

Playing with your thing.

Answer 3

snacking