Himitsu no Akko-chan (1962)
It could be posture, repeated bending over and getting back up, big boobies pulling on certain muscles, spinal issues (ie disc issues, scoliosis), leaning against hard or weird surfaces (like a school chair/metal pole), or your body just hates you.
IT AINT THE BOOBS I KNOW FOR SURE its probably my scoliosis
tbh its probably my fucked up spine i have scholliose or how ever you spell it and mine is so bad that if where to get any worse i would need a brace pluse im also swayed not only is my back in the shape of an s its also swayed
I want to pet kitties!