YOU SAID:
i'm going to freak out
INTO JAPANESE
私はびっくりするつもりです
BACK INTO ENGLISH
i'm going to surprise
INTO JAPANESE
私は驚かすつもりです
BACK INTO ENGLISH
i am going to surprise
INTO JAPANESE
私は驚かすつもりです
BACK INTO ENGLISH
i am going to surprise
You've done this before, haven't you.