Answer:
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
If you lose one of me, you are upset, bewildered, and perplexed. If you lose two of me, you are blissfully unaware. What am I?
What has banks but no money a bed but no sleep waves but no ocean?
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
I was not born but I am here. I have no name but I am given many. I was made by science and life
I will disappear every time you say my name.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic