Answer:
What is in seasons, seconds, centuries, and minutes, but not in decades, years, or days?
Sitting down you have it, Standing up you don't.
Casper was a friendly one and Demi Moore made a clay pot with one.
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
Once you know it exists, it no longer exists. What is it?
The profession of Jimi Hendrix and Eric Clapton
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?