YOU SAID:
Santa ate my first cookie and wouldn't make up for it
INTO JAPANESE
サンタさんは私が初めてクッキーを食べたけど、埋め合わせはしてくれなかった
BACK INTO ENGLISH
Santa ate my first cookie, but he didn't make it up to me.
INTO JAPANESE
サンタさんは私の最初のクッキーを食べましたが、私には食べられませんでした。
BACK INTO ENGLISH
Santa ate my first cookie, but I couldn't eat it.
INTO JAPANESE
サンタさんが初めてのクッキーを食べてくれましたが、私は食べられませんでした。
BACK INTO ENGLISH
Santa ate my first cookie, but I couldn't eat it.
You've done this before, haven't you.