놀래 자빠질 뻔 했잖아.

[lunar grail]

What does this mean? Is it being sarcastic about a bad attempt to scare someone or does it mean something different?

[static cipher]

It's more of teasing I'd say. It'd probs be said like this 놀래 자빠질 뻔 했잖아ㅏ~

Rather playful than sarcastic