Riddles: Which way to Truthsville?

One day your walking down the street when you come to a fork in the road. One way is to Truthsville where evreyone tells the truth, and the other to Liarsville where evreyone tells lies. There is a man standing at the fork, and he is from one of the towns. What do you ask him to find the way to Truthsville?

Answer. What way is your town?

Explanation. A man from Liarsville could not point the way to his own town, since he always lies.