The annual Australian Football League Mark of the Year competition is a sporting award that celebrates each season's best "mark." A mark is the action of a player cleanly catching a ball that has been kicked and has traveled more than 15 meters through the air without hitting the ground.
A spectacular mark, also known as a "specky," is a mark in Australian rules football that typically involves a player jumping up on the back of another player.
Jumping on the back of another player is legal in Aussie rules football. It may be the only sport in the world that so richly rewards jumping on an opposing team's player and using them as a kind of launching pad. Take a look at some of the previous marks of the year here and here.
Feel free to learn along with the student about this incredible sport and award.