What does this simple rebus mean?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Can you find the hidden animal in the picture below?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

Rearrange the letters in "new door" to make one word.

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

What does below Rebus mean ?

esgg sgeg gegs gsge

What's a single-digit number with no value?

You walk into an old horror house. It has no power or plumbing. Once inside, you see three doors. Each door has a number on it. Behind each door is a way for you to die. Behind door number one, you die by getting eaten by a lion. Behind door number two, you die by getting murdered. Behind door number three, you die by an electric chair. You can’t turn back, so you have to go through a door. Which door do you go through?

Why do people go to bed?