One Direction have revealed that they had a day every month were they ran "riot" and caused unrelenting mischief.

The British pop group are aged between 18 and 20 and it seems like the quintet like to have a bit of fun on tour.

Speaking to The Sun, Louis Tomlinson said they created "Deadly Day" - 24 hours of pranks and mischief-making without any rules - to make things a bit more "interesting". He said:

"Deadly Day - we originally had a day every month when we just run riot, and there's no rules and we just cause mischief. It can get a bit boring on the road so we like to make it interesting for ourselves."

The 'One Thing' singer added that the band recently decided to stand on top of a roof - just because they can. He said:

"We climbed onto the roof of a building the other day. There were about 10 people at the bottom telling us to come down. We're young lads. It's good to feel alive."