What is both possible and impossible at the same time?

Two brothers were watching a horror film on video late one night. One brother dozed off and dreamed that he was being chased by the crazy man from the movie, who was trying to kill him. In the dream, he hid in a cupboard. There was no sound except his heart pounding, and he had no idea where his crazed captor was. He was terrified! At that moment, the video finished, and his brother put his hand on the shoulder of his sleeping sibling to wake him. The shock at that tense moment was enough that the sleeping brother suffered a massive heart attack and died instantly. True or false?

I’m tall when I’m young, and I’m short when I’m old. What am I?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Which word does the below Plexor means ?

How many triangles can you find in this given picture?

Take one out and scratch my head, I am now black but once was red. What am I?

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?