A back crack that is so loud it can be heard over the phone. Alternatively, it is a back crack so crisp and audible that all the people in a room are both drawn to it and are left wanting the same for their own vertebrae.
“Hey man my back has been killing me.”
“Sounds like you need a Sophie Crack!”
—
“It was really akward in the board meeting when this older man in a grey suit let out this huge Sophie Crack and the entire room went silent. The presenter was left entirely discombobulated.”