Question:
An electric train is going 40 mph north, the wind is blowing 60 mph south. Which way is the train's smoke blowing?
Answer:
The train is electric, therefore there would be no smoke.
Try another Brain Teaser:
500 at the beginning, 500 at the end,
5 in the middle is seen,
The first of all letters, the first of all figures
Take up their stations between,
String them all together, and you will see
The name of an ancient king.