멍해졌어요

A: Did your class presentation go well? I’ll bet it did.
B: I gave it my all, but it was a debacle.
A: You prepared so well for it! What went wrong?
B: When I got up in front, 정신이 멍해졌어요.

A: 반에서 한다던 발표 잘했니? 잘했겠지.
B: 최선을 다했는데, 완전 망했어요.
A: 준비는 정말 잘했었는데! 뭐가 잘못됐길래?
B: 앞에 나가니까, 갑자기 my mind went blank.

[Additional expressions]
*Did your class presentation go well?
– Did you do well with your presentation? / Your presentation went well?
*I’ll bet it did.
– I’m sure you did a super job. / You gave a fantastic performance, I’m sure.
*I gave it my all
– I put everything I had into it / I did my very best / I gave it everything I had
*it was a debacle
– it all fell apart / I messed everything up / I totally made a big mess of things
*You prepared so well for it!
– You had done everything to get very well prepared to do it!
*What went wrong?
– What happened? / How did it fall apart? / What got so messed up?
*When I got up in front
– As soon as I stood in front of everyone / When I finally got up to do it
*my mind went blank
– I couldn’t think / my mind drew a blank / I wasn’t able to remember anything