Answer:
You cannot keep me until you have given me. What am I?
What bone has a sense of humor?
Take off my skin I won't cry but you will.
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
Santa shakes his belly like a bowl full of me
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?