Answer:
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'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
Drop me and the world will shatter. You can always find me where you empty your bladder. What am I?
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I can be cracked, made, told, and played. What am I?
No matter how little or how much you use me, you change me every month.