What is 내 눈에 콩깍지?

내 눈에 콩깍지 is a Korean saying that translates to "a mole in my eye." It is used to describe something that is irritating or bothersome, similar to the English idiom "a thorn in my side." This saying is often used to refer to a person who is particularly annoying or a situation that is causing frustration. It can also be used in a humorous or playful way to tease someone. The origins of this saying are not clear, but it has been a commonly used expression in Korean culture for many years.