"I'm just like a doll, but I'm not for playing;I stand up very straight, but if windy I may be laying;I'm pretty well-known, famous for no brain;I work outside both day and night in sunshine or in rain.What am I?"
I have three feet but am unable to walk. I tell you what you wish to know but cannot talk. Sometimes I'm rolled up and sometimes I'm straight. I do have digits, but won't tell you your weight! What am I?