Whom I was angry with ??

Last week one day, dogtired after work, I was doin some work at home and suddenly I knocked my eye on a piece of glass. It was a thundering knock. I must admit I swore at the piece of glass. I dunno whom I was addressing. But there was no bleeding. Later I realized the piece of Glass, What it means. When you look into it you see yourself (Reflection). Wonder whom I was angry with ??