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 by Steve O'Rourke and Angelia LaFlamme March 10, 2008

crack finger 

The finger you scratch your ass crack with

My index finger is my crack finger

crack finger by Dubiks December 19, 2018

crack my finger 

say it backwards,i dare you

person:crack my finger
same person: finger my crack

crack my finger by dank memist May 24, 2019

finger-crack

Noun- a smartphone that has enraptured its user to to point of serious addiction, such that the use must touch, tap, swipe, etc. or else become irritable and aggressive

Seeing the same student on her phone for the umpteenth time that period, the frustrated teacher told her student to put the finger-crack away and try, for the sake of all that is good, to control her addiction for the final five minutes of the period. Jonesing for another TikTok fix, the girl managed to pocket the device for all of 17 seconds.

finger-crack by Mr. Faraday January 9, 2024

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 fingers by Weed lord June 1, 2018

crackfingers 

when the addiction to your cell phone causes u to be able to type 1000 words a min with out lookin watchin tv

Look at crackfingers alex on her phone again while watchin cake farts

crackfingers by fake name 2010 June 7, 2010