Answer:
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
You can only have it once you have given it.
Hold the tail, while I fish for you.
What is up that’s also down? What’s a smile and a frown?
I can be short and sometimes hot. When displayed, I rarely impress.
What age most travelers have?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?