What does this rebus puzzle means ?

What jumps when it walks and sits when it stands?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

What has to be broken before you can use it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What does Alexander the Great and Winnie the Pooh have in common?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Can you find out the total number of triangles in the given figure?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?