Pretty random, but extremely relevant. I know that the most it takes to break tempered glass is a few taps with a hammer, but that's not what's happening in the scenario.
Most Helpful Guy
Depends how big and thick the pane is. If you went through a large pane of glass with your shoulder you would be sorry. If you want to break a pane of glass and only have your body better to do it with your elbow.1