Longer nail on one's finger, used to place the coke on and snort. Typically the pinky finger, and can be seen on both males and females, though mostly men.
Look at that dude's coke nails, he's a badass coke-head.
A typically long, narrow, darkly litbar or nightclub, usually operating after hours, where people usually go to do cocaine for hours on end as their lives crumble around them, found in trendier parts of most major cities.
After the show they all went to a new coke tunnel in the west end and partied into the morning.