YOU SAID:
Don't be such a party pooper.
INTO JAPANESE
そのようなパーティープーパーにならないでください。
BACK INTO ENGLISH
Don't be that kind of party pooper.
INTO JAPANESE
そのようなパーティー プーパーにならないでください。
BACK INTO ENGLISH
Don't be that kind of party pooper.
You've done this before, haven't you.