1. The urge to make a bowel movement while flying on a plane. The victim is hesitant to use the in-flight facilities usually due to embarrassment, anxiety, or laziness. This predicament is often coupled with the fear of having another person waiting to use the facility. Sometimes equated with "prairie-dogging", "the bubble guts", and/or "crowning."
2. Being prevented from leaving one's seat despite having an extreme need to use the restroom.
"Marcy could no longer read Sky Mall--she was experiencing heavy turdulance on her way to Atlanta."