A powerful forward thrusting kick, similar to that of what an ostrich does when cornered. It can be a potential deathblow when the ostrich does it, but not necessarily as bad when a human does it.
friend 1: I heard a pitbull was chasing you yesterday. What happened?
friend 2: Yeah, I ran for about a block and got tired so i turned around and ostrich kicked it in the face. It lived, but it was still out cold when i passed the street an hour later.
friend 1: i guess it won't be chasing anyone again for a long time.