human polo

(noun)
1. An activity played typically on horseback or any other mounted animal where a person charges through a crowd to score points by driving a human head (usually cleaved off of unsuspecting civilians in the crowd) into the a goal using a long-handled mallets/sabers/axes really any kind of weaponry.

person 1: "wait what are you doing?"
person 2: "making Altaïr play human polo."
Person 1: "running through Asassin's creed huh"
Person 2: "yep I got three of'em in this last game"