Answer:
I am Invisible Man's drink at snack time
I hold two meanings. With one I may be broken with the other I hold on.
I let water fall on you while everyone else stays dry.
When you buy me I am costly, but the only use I have is hanging only. What am I?
When I point up, it's bright. When I point down, it's dark. What am I?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk