Do people still call it that? Do they still have these things? A Stop-N-Cop is (was?) a spot to stop and cop a nickel or dime bag of cannabis. An outdoor convenience store. You'd slowly drive up the block, and someone would emerge from a doorway, or from between some parked cars, and come up to the driver's window. The transaction commenced, and you were in-and-out in a minute or two, depending on how finicky you were about taking a demanding-consumer whiff of the contents of the bags on offer. Trust was involved - you or someone in the car with you had at least some bit of acquaintance with one or more members of the crew doing the selling.