A more fun and unique way to say "Baka". You could call someone a "Soosy Backer" this ties in with the word "Soos" and how it can be used to make fun of people.
An individual with back pain and/or a spine condition that fights and works hard each day to persevere and overcome their back and spine challenges to be productive and enjoy life.
Jane has been dealing with her back pain for several years, but she is a true Backer that doesn't let it get in the way of achieving her goals.