Why Aeroplane windows are round?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

What always comes into a house through the keyhole?

Imagine you are in a room with no windows or doors. How will you get out?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?

What is the end of everything?

what does the below rebus mean?