A Few New Vices

There's a young lass who works at the Deli Express in town. She is pretty, but she has no discernible vices. She doesn't appear to drink, she does not smoke, she does not gamble or, it would appear, go out much.

Oh, the temptation to take her under my wing and introduce her to some interesting vices ...

Would anyone here care to volunteer which one I should tempt her with first? :)