I was having lunch with two seonbaes. One of them was telling me an anecdote about a ditzy seonbae. He said, “I was teasing her rather severely and she got so mad. When I pretended nothing was wrong she shouted ‘적반하장도 과분수지!’”
We all laughed. The other seonbae said between his laughs. “OMG that is so funny. 적반하장도 과분수… How stupid is that?”
Original seonbae: I know, right?
Other seonbae: How could she get that wrong? It’s 가분수 not 과분수.
There was silence all around.
Original seonbae: You fucking moron.
For the record, the correct term is 적반하장도 유분수.