YOU SAID:
i am sleeping over at my grandparent`s house tonight
INTO JAPANESE
私の祖父母の家で今夜寝てます。
BACK INTO ENGLISH
I'm sleeping tonight at my grandparent's house.
INTO JAPANESE
今夜は祖父母の家で寝ています。
BACK INTO ENGLISH
I am sleeping at my grandparents home tonight.
INTO JAPANESE
今夜は祖父母の家で寝ています。
BACK INTO ENGLISH
I am sleeping at my grandparents home tonight.
Okay, I get it, you like Translation Party.