Ding-dong ditch, e.g.

ANTIC

Think of a playful, mischievous act that might involve running away after knocking.

"Ding-dong ditch" is a prank where someone rings a doorbell and runs away before the homeowner answers. The clue uses it as an example of an "antic," which means a playful or mischievous act. The word "e.g." signals that "ding-dong ditch" is just one instance of the broader answer, making "ANTIC" the right fit. It’s a straightforward definition clue with no hidden wordplay—just a common term for silly behavior.