Don't know how local this is, but one I've heard a few times is to "drop a dime" on someone. Meaning is to snitch, to turn someone over to authorities.
Typical usage: "If that wild party next door doesn't quiet down, I'm gonna drop a dime on 'em."
It comes from the distant past, unknown to our younger forum members, when there existed such things as "pay telephones" and the cost of a phone call was a dime. To preserve anonymity, a snitch would rat out his mates from a pay phone, dropping a dime in the coin slot to make the call.