What is the origin of the idiom "skinny as a beanpole" and when to use it?

The origin of the idiom draws upon the image of a beanpole, which is a long, tall, and thin pole or stake used for supporting plants like beans. The association with thinness likely comes from the visual comparison between a person's slim figure and the long, slender shape of a beanpole. It is commonly used in casual conversations or informal settings to comment on someone's physical appearance in a light-hearted manner. However, it's important to be mindful of the potential sensitivity around body image when using such idioms.