Pooby Trap
The act of farting in an enclosed space and then leaving (examples: your car or closet, ). When you or another person returns to the space the fart odor still remains ready to assault the individual as soon as the space is breached. Can be done to yourself without realizing it and intentionally to someone else.
I made the mistake of farting in my car as soon as I parked it. When I came back half an hour later I sprang the pooby trap and fart smell hit me right in the face.