my name is alarm clock

I found myself cornered by my owners anger toward me.  That jerk got angry at me when I did what he set me to do.  He was angry at me for "going off" at the time I was predetermined to go off.  He had asked me to go off at a certain time and then hit me in anger when I went off.

I was durable though.  I know I serve a great purpose in my owner's life.  I assure his presence in the right places at the right time, which really makes all the frustration and anger worth it.