Answer:
I can be as thin as a picture frame but my insides have many things you can see.
Men in skirts blow into these.
What goes up when rain comes down?
What gets wetter and wetter the more it dries?
What can you hold in your left hand but can never hold in your right hand?
A cowboy rode into Friday. He stayed in town for three days and rode back on friday. How is that possible?