There's that magic word, "hit."
Since Dean is such a touchy-feely Dem, maybe he is talking about a powerhit.
One of the more intriguing techniques of smoking a joint is taking what is known as a powerhit. This is accomplished by having an accomplice surround the burning end of the joint with their mouth, taking care not to allow their skin to come into contact with the glowing end, and blowing while one takes a hit from the other end. This can be somewhat dicey, but is one of the more intimate ways of sharing a joint.I can imagine Hill and Bill enjoyed powerhits.
Wasn't that technique also known as shotgunning?