(verb) The anal ingestion of a drug, administered with a
syringe.
The method is nearly as effective and as fast as
intravenous method. As with all things there can be some unpleasant side effects depending on what chemical/drug is being injected.
Stevie could not hit a vein for shit earlier. I think he did it that on purpose because in short order after a few attempts, the fagget-singer broke
the needle tip off his rig, raised up in the seat, cause I was driving when he did it, and then he worked his hands behind him and gave me a first hand
demonstration of booty-bumping.