A term used by servers in a restaurant. When you have a table of assholes, you ask a co-worker if they can "crop dust " the table. As they pass by the table, and trail a nasty fart around said table. this keeps you blameless.
Verb; the act of blowing a breezer while traveling passed one or more people. Similar to traditional crop dusting; the idea is to allow the gascious air to settle over a destination specified by the direction of travel, angle of the rear, and pressure put on the sphincter. It's a delicate yet powerful move.