I genuine did snap my banjo string once, back when I was 17 or 18 I think.
I can promise you, women and childbirth have NOTHING on that kind of pain. Not much blood though, which was good I guess. Worst part is that it had just about healed up, and then I got engaged to the girl I was seeing at the time so of course we celebrated by having sneakytimes, and I tore it again but kinda had to continue!
Oh, I laugh about it now. Wasn't so funny at the time, I can tell you.