YOU SAID:
Your mum was hot last night
INTO JAPANESE
あなたのお母さんは昨夜暑かった
BACK INTO ENGLISH
Your mother was hot last night.
INTO JAPANESE
あなたのお母さんは昨夜暑かったです。
BACK INTO ENGLISH
Your mother was hot last night.
Okay, I get it, you like Translation Party.