Answer:
You can do this with your friends. You can do this with your nose. But don't do it with your friend's nose!
What is often returned, but never borrowed?
One am I, among six others: Largest, smallest, cold, dark and two brothers
One strand dangles. Two strands twist. Three or more can fashion this.
Where can you find roads without cars, forests without trees and cities without houses?
I build up castles. I tear down mountains. I make some men blind. I help others to see.