I was out of town one weekend when I was in college and one of my buddies came over to hang out with my roommates. He decided to screw around with my bow and dropped the sting while pulling it back. Luckily he only exploded the string and he paid to have it replaced.
it's nice he tried to make it right but that would still piss me off. new strings mean new tune, break in time and possibly new sight tape. did you have a custom string before?