Answer:
What travels around the world without leaving the corner?
What is all over a house?
If you have me, you want to tell me. If you tell me, you don't have me.
What is often on the ground getting stepped on by others, but you donโt have to wash it because it never get dirty, in fact you couldnโt wash it even if you tried?
What has holes on each side, but can still can hold water?
What language does a billboard speak?