YOU SAID:
aww man you are a party pooper
INTO JAPANESE
あなたはパーティーのプーさんです
BACK INTO ENGLISH
You are Mr. Poo at the party
INTO JAPANESE
あなたはパーティーでプーさんです
BACK INTO ENGLISH
You are Mr. Poo at the party
Okay, I get it, you like Translation Party.