English rendering Get a knuckle rap on the head Literal translation: “Eat a knuckle chestnut”
Be struck on the head with someone’s knuckles
Dictionary example 1
오늘도 숙제를 못해서 선생님에게 꿀밤을 먹었다.
Read the meanings, trace, then cover above the masking line and write. Uncover, choose a meaning, and make your own sentence.
Writing text꿀밤 먹다
Explore the body parts or scenes linked to this idiom.
A silent film that writes the headword and its meaning.
have a protruding skull For the front and back of the skull to protrude. 
Be flawed or lowborn Have a flaw or be of low social status 
Shared · 4 begin thinking like an adult A coarse expression for coming to think or judge like an adult. 
Shared · 4 be empty-headed A coarse expression for lacking judgment or insight. 
Shared · 4 Grow up A vulgar expression for coming to think or judge like an adult 
Fight violently Fight with extremely severe blows and beatings 
Shared · 2 Use one's damned head A vulgar expression for using one's mind to devise a solution. 
Attack with all one's strength Charge with all one's strength. 
Shared · 5 be wet behind the ears A coarse expression for being far from adulthood or young. 
Shared · 5 Still be a mere youngster A vulgar expression for still being young or a long way from adulthood Browse in Hangul order.
WORDROW Korean Idioms