The expression “drop a dime” usually refers to informing the police or other investigators about someone’s illegal activity. Still, it is sometimes used for more general and less severe circumstances whenever someone informs on another person’s infractions. The young readers may not know how a dime was used in the previous century, before the advent of cell phones. On almost every corner in the US, there was a coin-operated telephone, and anyone with 10 cents or a dime (no pennies) could make
