Answer:
I get wet when drying. I get dirty when wiping.
What invention lets you look right through a wall?
Cloud is my mother. Wind is my father. I come down but never go up. What am I?
I am easy to see but no one likes looking at me. Without me there would be no you. I can make you complain or make you happy. But you almost always take me for-granted.
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
What never gets any wetter no matter how hard it rains?