The correct response is:
Yes, it would hurt because the bricks would still have the same mass.
On the moon, the gravitational force is about 1/6th that of Earth, so an object would weigh less there. However, weight is the force of gravity acting on mass, and the mass of the bricks would remain the same regardless of location. Thus, if you were hit by a ton of bricks on the moon, it would still have the same mass and could cause harm, even if it would have less weight due to lower gravity.