I had a male friend try and crack my back last night. I was standing facing him with my arms crossed over my chest and he squeezed me like in a bear hug and pulled me forward and upward and when he did it sounded like bones crunching and it knocked the wind out of me for a few I could barely breathe and now today I can't bend forward, hardly move, cough, laugh or even pull my pants down to go to the bathroom without it extremely hurting