What brings you down but never up?

What does this rebus photo means?

Can it be possible to build a house that has all its four walls facing towards the South?

What part of the chicken has the most feathers?

What word is pronounced the same if you take away four of its five letters?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?