Answer:
hide me from your parents if you have done bad academically this year.
I have Eighty-eight keys but cannot open a single door.
I am the ultimate killing machine used not once but TWICE I can be made by humans.
I am partially baked. I am not completely lit. I am a portion of the moon. I am lesser than full wit. I am a divider of the hour. I am not a total lie. I am a sibling through one parent.
I can bring tears to your eyes, resurrect the dead, make you smile, and reverse time. I form in an instant, but I last a lifetime. What am I?
What language does a billboard speak?