Watch: The cast of Game of Thrones are suprisingly good at identifying each other's bums

It's been pretty well documented at this stage that the cast of Game of Thrones get on pretty well with each other. 

So well in fact that it seems most of them are able to identify each other from their rear ends. A reporter put the challenge to some cast members on the red carpet for the season 6 premiere and the cast almost came through with flying colours except for one bum that even perplexed it's owner. 

Via YouTube