The action of trapping an unsuspecting person in a place which you have released a deadly fart cloud. This "place" can be under the bed covers, in a sleeping bag, in a locked car, in a closet, or any place that will trap the cloud allowing maximum fumage.
On our camping trip, Joe Bob gave me a dutch oven by farting into my sleeping bag and zipping me up in it. I survived to tell the story.
Covering a person with a blanket, and then farting under the blanket, making sure the fart remains trapped in the blanket bio-sphere. The desired effect is that your dutch oven occupant will have no choice but to inhale the noxious fumes.
Scotty was being such a douche, Nick and I had little recourse but to give him a dutch oven.
A Dutch oven is where you let of a gastly fart under the bed covers and trap it while your girlfriend is out of the room; when she gets back in bed, you force her innocent face under the sheets to see if the odour makes her vomit.
"Pete, last night i Dutch ovened my girlfriend! I wish it had made her vomit though..."