one who passes gas under the cover, and forces his or her spouse,or companion to smell their creation by throwing the cover over ones head..

when you're hungover as shit after a spending a night drunk as a skunk

To silently fart under the duvet, jump out of bed, run around to your partner and push your buttocks to their face as if going to fart. Your partner will, out of instinct, dive under the duvet straight into the ambush of whiff. A perfect dutch oven.