Answer:
What is the difference between yesterday and tomorrow?
Feed me anything and I will live.. But feed me with water and I will die...
A man is twenty years old but has only had five birthdays. How is that possible?
The answer I give is yes, but what I mean is no. What was the question?
What is yours but only used by others?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?