Finger-cracking
A very bad habit that millions of people have, producing an irritating "cracking" sound. You'll know it when you hear it, or see someone doing it.
Why can't people crack all their fingers together at once and quickly get it over with?
Crack fingers
When u have a crack lighter too close to your fingers it burns (usually from heated swishers to mild them to sticking)
Damnit I keep getting crack fingers every time roll a swisher
crack finger
Callous on the inside part of the top joint of the thumb, due to excessive flicking of your Bic. Slang common amongst suspicious psychiatrists.
Dude, my shrink accused me of having crack finger, even though he knows I'm a chain smoker.
crack finger
The finger you scratch your ass crack with
My index finger is my crack finger