The act of depositing drugs into your anus to get high quicker.
Last night i was banking xanax and blacked out and stole a cop car. Hold on guys i have to stop and make a deposit at the bank. I'm going for the bank shot.
In the popular TV show "The Weakest Link" contestants have an opportunity to "bank" if they want to safehouse themselves from a future mistake. This inspires the term "banking" to describe women of a certain age (generally 33+) settling, or "banking" on a perhaps unsuitable partner in order to leave appropriate time for marriage and babies.