verb, fair-eeduhs-ter to fart a cloud of powder into someone's face. Usually done by sprinkling baby-powder in your ass crack. However, you can be creative; it works with many different powders and also can be done with queefs.
"Dude, last night this girl gave me a fairy dusting I'll never forget!"
"Hey baby get on your knees I'm gonna give you a fairy-duster"
"Hey baby get on your knees I'm gonna give you a fairy-duster"
by P-B-J May 8, 2010
"Man! You are SUCH a fairy duster! You just got totally rejected by that hot chick because you're too girly! What a fairy duster!"
by Qui Qui November 12, 2009