YOU SAID:
Are you over eighteen?
INTO JAPANESE
あなたは18歳を超していますか?
BACK INTO ENGLISH
Are you over 18 years old?
INTO JAPANESE
あなたは18歳以上ですか?
BACK INTO ENGLISH
Are you over 18?
INTO JAPANESE
あなたは18歳以上ですか?
BACK INTO ENGLISH
Are you over 18?
That didn't even make that much sense in English.