no brass

When someone doesn't give a damn anymore. Similar to someone "zerofucksgiven"

Brass is a beautiful metal when polished and can be used to decorate things. When someone has no brass, it means they are raw, bad to the bone, and don't give a rats ass.

This kid was driving over curbs and doing improper u-turns, speeding like a bat out of hell... Kids got no brass dude!

Also: Did you hear the way this punk talks to the big dogs!? Bro he has absolutely no brass! The audacity is through the roof!