1. Literally: The ashing of a blunt, to knock off the burnt material at the end of the L. (dusting a blunt)

2. More commonly: The act of smoking a blunt, usually in a hotboxed car, with 5 people, and using cigar leaf of the White Owl variety. However, dusting a blunt can refer to any blunt smoking occasion.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.

The act of drizzling cocaine over your marijuana right before u roll it wit a blunt wrap.