Waste your opponent and your time gratuitously.
Setting this up can be a little tricky.
First you need to impale your opponent from a standing position:
This can be done by standing still with your sword in middle position and having your opponent run at you.
If their speed wasn't too fast they will become stuck on your sword in a 'dead' state.
You may need to move toward/away from them a little bit in order to be able to move your sword up and down without them falling out of the impaled state.
Good luck.