Ahhh you been introduced to the artful sport of bum sniffing

Union is big in to scrums where it seems they way to win one is stuck your head up a team mates ass and tickle his balls till he cant stand it no more and he in turn squirrel grips the opposite team player.
Frankly mate its a quandry to me too, I do know however that some of these guys are the toughest SOB's that walk and take hits with out pads which would have a nfl person squeal all the way back to momma's house.
As for the rules there doesnt seem to be any, apart to try and get the ball through the sticks at the other end of the ground by any means possible. Weapons optional!