YOU SAID:

aww i'm gonna beat ya so hard you'll have a twitch

INTO JAPANESE

ああ、私はあなたが痙攣を持つことになるので、一生懸命屋を打つつもりだ

BACK INTO ENGLISH

Oh, and I'm going to beat ya so hard you'll have cramps

INTO JAPANESE

ああ、私はあなたがけいれんを持っているだろうので、一生懸命屋を打つつもりだ

BACK INTO ENGLISH

Oh, and I'm going to beat ya so hard you'll have cramps