As a teenager she would 'sneak' out (of her house/apartment) at night to visit her boyfriend.
I'm going to 'sneak' a smoke. [=I'm going to smoke a cigarette while nobody is watching]
She took a 'sneak peek' [=a secret look] at the birthday presents hidden in the closet.
(..) I wanted to drop a bomb. But people didn't believe in this lead enough to drop a bomb. So, they're using you guys, as canaries, in a theory that if bin Laden isn't there, you can sneak away, - and no one will be the wiser. - Hmm. But bin Laden, is there. And you're gonna kill him for me. (..)2012 Zero Dark Thirty