In order to do a proper "Crop Duster" one must powder his ass before going into the 69 position. If she doesn't cum up with powder on her face someting is wrong. (Scented powder recommended because it covers the smell)
She was powdered down after that crop duster i gave her last night
by BigMark30813 August 04, 2006
Sexual act where a male ties a female up, sets up a fan in front of her face, and masturbates into the fan until ejaculation, thus splattering the discharge all over the female's face.
Susie: Tommy, last time you gave me a crop duster you ruined my new top!
by Rodney Simmons September 21, 2007