YOU SAID:

Hey, it's your cousin, wanna go bowling?

INTO JAPANESE

ねえ、あなたのいとこは、ボーリングに行くか。

BACK INTO ENGLISH

Hey, your cousin go bowling?

INTO JAPANESE

ねえ、あなたのいとこがボーリングですか。

BACK INTO ENGLISH

Hey, your cousin is boring?

INTO JAPANESE

ねえ、あなたのいとこはつまらない?

BACK INTO ENGLISH

Hey, your cousin is boring?