Answer:
Forward I am heavy backward I am not. What am I?
I belong to you but others use me more often than you do
I'll bring out your bulls and slow your roll. I may even come out of your skull.
I go around and in the house but never touches the house
When you buy me I am costly, but the only use I have is hanging only. What am I?
The answer I give is yes, but what I mean is no. What was the question?