I’m A Coccyx
The tailbone, considered vestigial, which means no longer necessary. Like wisdom teeth, they're pulled nowadays. I serve purposes and perform functions, I am not no longer necessary. Trying sitting without me, try relaxing comfortable without me, try distrubuting your weight without me, try to balance and try to be stable without me. I also can help you move, I help you walk, run and let's not forget, I can help you dance.
Have you ever hit a bump and landed on your butt or fallen behind, I am there for you, unless you'd rather land on your spine bottom. That sounds paralizingly awful.
Don't abuse me either. Take care of me. Use a pillow, cushioned and padded seats, don't stay on a bike or horse for too long, take breaks from sitting and walk around, stretch your body, don't lean on me so much. I can be a real pain in the butt.