a rap across the knuckles

a rap across/on/over the knuckles

a punishment which is not very severe but which warns you not to behave that way again The company received a rap over the knuckles from the Food and Drug Administration. Her remarks earned her a sharp rap across the knuckles from the Prime Minister.
See also: across, knuckle, rap
References in periodicals archive ?
The trio failed to complete a competitive training match, with Carey sent to hospital after taking a rap across the knuckles.
He had earlier been given a rap across the knuckles for being spotted on the golf course.
There is also a rap across the knuckles for Wales coach Graham Henry.
The winner, a March 98 whelp, ran in a race restricted to April 98 and younger greyhounds, and Nottingham's Nathan Corden said yesterday: "We've had a rap across the knuckles from the NGRC for the mistake we made.
It's getting ridiculous, but it has prompted totesport to frame an interesting market which asks punters to name the next Premiership team called to FA HQ for a rap across the knuckles.
Frankie Dettori came away from a Jockey Club grilling at Portman Square with a rap across the knuckles yesterday.