Mr Noone is lost somewhere. He has no map, no water, nothing but a compass. He decides to take a nap, and then think about the way to go.
After waking up, he takes his compass, and start walking south. After approximately 1Km, he changes his mind, and head west, during one more km.
After a short break, he finally decides to head north. He keeps walking 1Km, and noticed… that he just came back to the place he had a nap.
So the question is…
What color are the bears? (and of course, why?)