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2. crop-dust
To fart or pass gas in an area as you walk. Slowly permiating the air.
Steve did the crop-dust in the office east-wing this morning....it stunk bad.
1. Crop-dust
To fart discretely and then walk away from the scene so as not to be detected.
"My stinky was completely undetected, Susan...I crop-dusted my way across the party."