I just tore a lock off.  Yes, you heard me right.  I actually tore a lock from my own head . . . on purpose.  Seems a lock was hanging by a thread.  I've come across it several times, but always imagined that I would repair it by twisting it with another lock.  Long story short . . . that didn't happen and now there is a lock sitting in the trash can.  
*Sigh*  First time for everything, I guess.