When you high as a mofo, driving and you start seein random crap in the corner of your eye that just looks like a bunch of dust shaped as a human in your headlight.
"Zamn felicia I was so up in the sky I saw some dust ghosts. Betta call ghostbustas!"
To take an object such as a funeral urn filled with cremated ashes and dip one's penis inside, covering it in ex-person dust.
"Did you hear Dave's parents kicked out their lodger a week after his Grandma's funeral? They came home and found him dusting the pickle in the kitchen"
Sexual fluids that dry on the penis (specifically the tip) after intercourse; in which the penis is not washed or dried directly following sex.
I just rolled over and fell asleep after fucking my girlfriend, woke up with crown dust flaking off everywhere.
The act of purposely driving on the shoulder of the road to shoot rocks or other debris at the car behind to prevent tailgating.
Dude the guy driving behind us is tailgating you, start gravel dusting him so he backs off.
The act of ripping heinous ass in the hallway adjacent to a row of cubicles and walking away as if nothing happened. The resulting stench may or may not overpower the unlucky occupants who happen to be happily working away in the cubicles closest to the blast radius.
Heather: "Man it really stinks, do you smell that Steven?"
Steven: "Yup, it smells like someone has been cube dusting a load of asshole."
Heather: "Damn that must be it! Jay just walked by to go to turn in his TPS report."
When one simplys busts a nut in a girl and leaves very quickly
Dan: so you got with that girl
Me: yeah did a little bust and dust had to get out of there quick