Tripping Someone

If a person’s foot is sticking out and trips another person is that considered בור or אדם המזיק?
If a person stops in a walkway to tie his shoe and someone trips over him and hurts themselves, is it like the above?

See the third perek in bava kama, seems to be bor hamazik 🙂

Is there a question that is of practical halachic application?

All The Best!
Rabbi Shay Tahan