get knuckles rapped

get one's knuckles rapped

1. Lit. to get one's knuckles struck with a ruler as a punishment. I got my knuckles rapped for whispering too much. You will have your knuckles rapped if you are not careful.
2. Fig. to receive a minor punishment. The lawyer got his knuckles rapped for talking back to the judge. Better watch your tongue if you don't want to get your knuckles rapped.
See also: get, knuckle, rap