the Express Elevator To AA

Green, hoovering his own share, supplies the fellowship's epithet for cocaine: the Express Elevator To AA, the drug that grabs the throat and won't let go and so delivers its users to the rooms faster than anything else. The joke is doctrine — the Boston AAs have named the substance by its recovery-outcome, the fastest bottom, so that even the dealer's product carries, in the argot, the destination it ships you to. And Green can relate, which places him too on the elevator.