Answer:
What room do ghosts avoid?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
What comes in many different sizes but is always only 1 foot long?
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
I am an English word that is as long as I am valued.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.