Ok so you are walking down a road, following a man
_________/___
The road turns off at one point
At the turning are two men, each man is identical in every single way possible
exept for one thing: One man always lies, one man always tells the truth
now this man u where following ran ahead out of view, you run after him, you know he will never leave the road, at the turning point you are puzzled, you turn to the two men, these men are very impatient and you can only ask them 1 question, not 1 question each, you must choose a man and ask him a question, what do you ask?
one of the most common riddles ever told, someone should know this