Your humorous is in your elbow and also called the funny bone
The correct spelling is "humorous" is the US, but "humourous" in Australia, UK and New Zealand. The arm-bone is spelt "humerus".
No, bone is continually being broken down and rebuilt in a process called remodeling. Old bone is constantly being replaced with new bone tissue as part of a healthy bone turnover cycle. This process helps with bone maintenance and repair.