Answer:
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?
The more you work the more I'll eat.You keep me full I'll keep you neat.
Drop me and the world will shatter. You can always find me where you empty your bladder. What am I?
I go up when the rain comes down
I tell people to be careful when handling boxes.
I am your mother's brother's only brother in law. Who am I?