Crud Fingers 

The smell of shit that can smell particularly strong from sniffing around the fingernails of someone who refuses to wash his/her hands after wiping his/her ass. This is usually due to toilet paper ripping or scrunching up, leaving the fingers exposed to warm shite still stuck in the anus after laying a brick.

Quite often, having longer nails will be more prone to have Crud Fingers as there is more room for feces to get trapped and smell like a grimy toilet bowl but the deciding factor really is washing your hands after dropping a turd.

Person 1: Dude, have you smelt that stench coming from that guys hands?
Person 2: Yeah! I heard he doesn't wipe. He must have Crud Fingers big time!

Crud Fingers by CrudFingers April 24, 2018

Crud Finger 

A phrase that's used among farmers that refers to the dirt stain on the side of your fingers that doesn't wash off until winter.

Person 1: Hey have you found any way to get that dirt off your hands?

Person 2: No, that's crud finger, it won't come off until the winter.

Crud Finger by organicintern July 12, 2009

crudfinger 

The smell on your finger after fingering a girls asshole.

Dude smell that.
Bro, you got some crudfinger.
I know man I slipped.

crudfinger by Natedogg27 April 21, 2009