Sneaking out after the other
people in the
house/
apartment are asleep (named for the
Snark Theater). Snarking out is not limited to
minors --
Flipping Hades Terwilliger, a grown man, snarks out without the
knowledge of the
brother with whom he lives in
Daniel Pinkwater's
The Snarkout Boys and the Avocado of Death.