English rendering know jack shit Literal translation: “not even know dog shit”
Coarsely, to know nothing at all.
Dictionary example 1
개똥도 모르면서 아는 체하지 마라.
Read the meanings, trace, then cover above the masking line and write. Uncover, choose a meaning, and make your own sentence.
Writing text개똥도 모른다
Explore the body parts or scenes linked to this idiom.
A silent film that writes the headword and its meaning.
Be freezing cold Of a room, be so cold that one could pass excrement pointed like icicles. 
Get a severe dressing-down Be severely scolded or put through a hard time. 
2 meanings Feel constipated; have lingering illness Feel uncomfortable because stool will not pass easily. 
2 meanings Be strained with worry Through anxiety, have stool become hard and dark. 
a utterly useless wretch A coarse expression for a person so pathetic that they are utterly useless. 
Have no sense of judgment Vulgarly, be unable to judge matters sensibly 
Fart Disparagingly, pass wind 
Have bad luck Be unlucky. 
have a damn hard time Coarsely, to have extreme difficulty. 
Be utterly disgraced Have one’s dignity or reputation reduced to a wretched state Browse in Hangul order.
WORDROW Korean Idioms 