A sign with large black letters warns, "Do not go on the head please."

The sign over the front door warned that repairs cost $75 an hour.

A sign on the hotel window warns that the area is under 24-hour surveillance.

A big sign in several languages warned against the open use of guns.

A sign outside our door warned that sleeping bags are not allowed.

A prominent sign in the garden warns guests to control their children.

A sign warned the other group to stay away.

The sign on its door warned: Maximum load - 3 people.

A sign above the couch warned against the use of cell phones.

A sign warns that beer cannot be taken from the premises.