what is the worst physical pain you've ever experienced? how did it happen? (possibly NSFW)

i broke my ankle a few years ago and completely dislocated it. the sole of my foot was facing upward. when the doctor was ''fixing it'' he said ''this might hurt a bit'' he then proceeded to re-locate my foot, and to say the least the pain was fucking sickening. i was screaming like a woman who just lost a child.