When my sister was little, our dad called her over for a serious talk. He said, “I found this in your desk. Where did it come from?” and pulled out a plastic bag filled with coins. My sister froze, looking terrified, then whispered, “It’s my pay for letting other kids at school copy my homework.”
There was a brief pause before Dad, trying to keep a straight face, told her to stop. There was no punishment that day, and as far as I know, Mom never found out.