When you walk by someone and let out a fart, and you unintentionally shit your pants.
I was walking in the mall and tried to crop dust an old man but sharted my pants and ended up giving my self a rusty crop-duster.
Pants, shoes or other articles of clothing that otherwise look like you could do manual labor in them, like dusting crops, pulling weeds, shoveling shit, digging ditches etc.,
Dang he's cute but he's always strolling around rocking them crop dusters on his feet. Can't stand nobody with dirty shoes.
The act of passing wind and having a person or people walk past and crop dust your scent for you.
Scott timed his fart perfectly as Jono walked past thus using Jono as his contracted crop duster to delightfully distribute the scent of his fart to share with others.
When you do a front flip and fart at someone spreading gas from face to foot.
Whoa, Jimmy just pulled a Dutch crop duster at the aerobics teacher and man he looks pissed!
A follow up to a dirty sanchez, when one cleans off the remaining fecal matter with a forceful ejaculation.
I can't believe Charlie did a Mexican Crop Duster on Jenn last night!
The act of shoving a broom stick up someone's ass while they proceed to take a hot steamy shit. Said act causes an abnormal explosion of fecal matter covering both participants in feces. Once finished, the broom wielder "dusts off" the stick with his/her tongue.
guy 1: i heard what you did to sally last night.
guy 2: oh yeah the old Bulgarian Crop Duster, it's one of my specialties.
When a female either farts or queefs and the gas smells like the Gulf of Mexico.
Wow Ashley is a Corpus Christi crop duster!