Answer:
It doesn't live within a house, nor does it live without. Most will use it when they come in, and again when they go out.
What is the thing which, once poured out, cannot be gathered again?
If eleven plus two equals one, what is nine plus five equal to?
I can ruin your day, or darken your life. And while I'm expected, I'm never alright. I'm bad for business, and worse for your hair. Wherever I am, there's something not there.
What moves without seeing and cries without eyes?
Which popular cheese is made backwards?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?