What has one eye, but can’t see?

What has a bottom at the top?

Forwards I am heavy, backward I am not. 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 is the rope you never skip with?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

Can you name an animal whose killing cannot be performed without spilling your own blood?

The Little ant seems to be always confused. Do you know why?

I can write cow in 13 letters.

Can You?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?