Overheard (#1)

The expression: It was just a disaster

Piece of dialog:
Speaker 1 How did your party go?
Speaker 2 It rained the whole time. It was just a disaster!

Meaning: It was really bad; it was awful

Explanation: The ‘just’ in just a disaster is used for emphasis. This could be to
emphasize something good as well as bad: It was just great!

Other examples: It was just terrible; It was just wonderful

Similar expressions: It was a total disaster; It was a total success
It was simply a disaster; It was simply wonderful