what are boondocks please?

The term boondocks refers to a remote, usually brushy rural area;or a term for a remote city or town that is considered unsophisticated.[ The expression was introduced to English by American military personnel serving in the Philippines during the early years of the 20th century. It derives from the Tagalog word "bundok", meaning "mountain". Occasionally "the boonies" or "the sticks", it has since evolved into a more general American slang term for "the countryside" and any implicitly isolated rural/wilderness location in general, regardless of topography or vegetation, that is isolated.

Anything from wilderness to rural areas, depending on your point of view. Strictly speaking, the boondocks are in the Philippines. The term entered the language (American English) during WWII.

out in the toolies, or out in the boondocks, can be a nice place to live if you enjoy nature. but you must be self sufficient because there are no wal marts or mc donalds around way out in the middle of nowhere.

The term has been in general use by U.S. Marines for the last seventy or eighty years. They use it as a noun to refer to any large area of terrain that is mostly brush-covered, forested, jungle, or swamp, and usually little inhabited. Marines know a lot about those kinds of areas.

It's a bushy area, like in a place where it is not really developed. We call the sticks, with lots of trees.

Very remote and underdeveloped...in the sticks.