I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Why do people go to bed?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

What is the longest word in the dictionary?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?