The phrase is outdated and not commonly used in modern English, mostly found in historical contexts. In the 19th century novel, the nanny threatened to box the child's ears.
Pro Tip 2/3
Physical Gesture
Originally meant a physical action but often used metaphorically today to imply a warning. He's so noisy, I sometimes joke I'll box his ears.
Pro Tip 3/3
Severity Spectrum
Can indicate a range of severity from gentle to more forceful based on context. Stop that racket, or I'll actually box your ears!