LIST | Celebrations at the Rugby World Cup explained

The celebration involves linking both his index fingers together as he holds his hands out in front of him. The celebration involves linking both his index fingers together as he holds his hands out in front of him.

Sports-mad Jack suffers from Duchenne Muscular Dystrophy (DMD), a debilitating muscle-wasting disorder that will leave him crippled and unable to walk.

After learning about Jack’s condition a few years ago, England star Farrell has been a big supporter of his in raising awareness of the charity Joining Jack.

Since the start of the Rugby World Cup, followers of France have been asking just why so many of the players have been using a certain celebration when they have scored a try. Players pop up from the ground, using the back of their hand to cover one eye.

Well, according to some of the France squad, it is in honour of a band of “pirates” within the squad, led by the buccaneer Louis Picamoles. The blues next play Wales in the Rugby World Cup quarter-final.

Nicky Smith's peculiar gesture after scoring against Uruguat caught the eye of a number of Welsh supporters as he appeared to do something rather strange with his fingers.

Smith was actually making a 'W' and 'M' gesture, which stands for "Waunarlwydd Massive".

Waunarlwydd is the Swansea village Smith is from, and the gesture has also been used by fellow Wales star and Waunarlwydd product Liam Williams in the Fiji match.