When you emerse your head completely into a recently purchased bag of fresh chronic. (ie: Diesel, Kush, Haze) To complete this action one must have an air-tight seal and inhale until all air has left the weed bag. Hold the hit in like a regular hit of the ol' bong then exhale - outside the bag!
Ry: Yo, Joey, You look high as hell, how many blunts did ya puff today?
Joey P: Nah, I just took a weed shower with your sister.