Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

My location can be determined by the below rebus.
So where am i ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What can you see in the middle of March and April that you can never see in any other month?

John is on an island and there are three crates of fruit that have washed up in front of him. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

Each crate is labelled. One reads 'apples', one reads 'oranges', and one reads 'apples and oranges'. He know that NONE of the crates have been labeled correctly - they are all wrong.

If he can only take out and look at just one of the pieces of fruit from just one of the crates, how can he label all of the crates correctly?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

When it is alive we sing, when it is dead we clap our hands. What is it?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Who always enjoys poor health?

Which is the correct shadow of the bird?