The inevitable callus that forms from smoking too many bowls with a bad lighter.

Your a Grillbilly when your grill is the nicest thing about your house.

the red and/or peeling skin on the finger, usually thumb, of someone who is new to smoking and/or smokes often because they are inexperienced and the lighter flame touches their thumb or finger

When you have a callus on the side of your thumb from lighting a lighter so often