1. To use one's digit as a scraping tool in order to get the last hit out of the bowl resulting in a finger that is black from ash/resin 2. Song by Hector Ward & the Big Time.
The Stoner wanted to take another hit of weed but in order to do that, he needed to Blackfinger the Bowl.
One of the best ships. it includes Sirius black and Marlene McKinnon . If you ever read a good fanfic of them you would see that they totally belong together