The weakest bone in the human body is the Lacrimal bone.
The Lacrimal bone is the smallest and weakest bone in the human body and is located in the face and spans between the middle of each of your eyes sockets.
Each of the lacrimal is thin and scalelike and serves as support for the eye.
It would be very easy to break that bone if you fell on your face and happened to break that bone in your body.
It's very rare that someone breaks that bone in their body but it can happen.
Another bone that is pretty weak and easy to break is the Stapes bone in your body.
The stapes bone is a stirrup shaped bone located in the middle ear and it transmits sound vibrations from the incus, another little bone in the middle ear to the oval window adjacent to the inner ear and is also considered to be the smallest bone in the body aside from the Lacrimal bone.