As I ran out the door my pocket got caught on the knob.
Oh dear, it must have torn your pocket then when it got caught.
Yes, it was quite a tear. It tore my pants as well.
You have to remember not to rush because accidents are likely to occur when you rush. You could have cut your skin besides just ripping your pocket and pants.
I don't think I would get hurt that badly from something like this.
You could get hurt, it does happen. Just try to take a little more time and focus on what you're doing.