When a person refuses to share weed with friends or loads a small bowl and cashes it himself. can also refer to when everyone wishes to smoke but the owner refuses to share.
Ray Jay is skin flinting tonight, we've smoked three bowls of mine and none of his.
Larger than chin bits and more flaky, usually in fewer numbers. Found on a gamer's "board and/or role playing" physical person. Not related to a medical condition of the skin. Usually occurring during long periods of soda drinking, chip eatings, staying up all night playing games of nerd persuasion.
"Gee, John, is that another Orc monster you're putting into play on the board, or one hella nasty skin flints, cuz you a scratching yo arm pretty hard...dust was flying off. "