You are in a room with no metal objects except for two rods. Only one of them is a magnet.
How can you identify which one is a magnet?
Wife is busy packing her clothes.
Man: And where are you going?
Wife: I’m moving to my mother.
Husband also starts packing.
Wife: And where do you think your going?
Husband: I’m also moving to my mother.
Wife: And what about the kids?
Husband: Well if you are moving to your mother and I’m moving to my mother then I guess they must also move to their mother…