Definition
At once, almost immediately, very quickly or suddenly.
Origins
From phrases such as in the snap of one's fingers, etc.
How People Actually Use It
A cowboywho wears pearl snaps and thinks he's the salt of the earth, a bad mother fuckerlikes to kick of his boots and drive you wild, then go through your yard with his panty dropping diesel please refer to diesel douche
"Friend: oh he's cute Other friend: oh no he's just a Heartbreak in a pearl snap shirt. Other friend: no way girl He's just a heart break in a pearl snap shirt."
Source: Urban Dictionary