Those One Direction boys really are incorrigible!

The band are currently touring in Canada and they have been joined by fellow X Factor star Olly Murs who is supporting them in concert and it seems that all that testosterone is having a crazy effect.

Last night the boys got involved in a gun fight backstage, though thankfully they were only Nerf guns and nothing more dangerous. Olly Murs admitted that he had been one of the first casualties, tweeting:

“Hahaha @Louis_Tomlinson @Real_Liam_Payne its war!! I’m gunna get a Nerf gun lads!! Louis got me right on the back of the head!!”

But being hit on the head with a foam bullet wasn’t the worst thing that happened on the evening, with Liam Payne later posting a picture of Niall Horan showing a new injury.

In the clip the Irish 1D star was nursing a sore thumb, with a huge plaster and Payne wrote:

“Niall really hurt his thumb.”

The band later revealed this picture of Niall on the tour bus and we have to admit, it’s not quite as luxurious as we would have expected for the boys who have taken the world by storm.

Meanwhile, One Direction’s management have had to hire extra security staff to protect the teen idols in Canada this week. Insiders say that the crooners have an extra five security guards at their beck and call this week, as they play in venues around the country, due to the mass hysteria they cause wherever they go.

A source told the Daily Star: “Fans kept mobbing them. They came back from Niagara Falls and thousands of baying girls were throwing themselves at the tour bus.”

Louis Tomlinson seems excited to be there anyway and tweeted this evebing saying:

‘#Excited for the signing today!! I really wanna try some reece puffs!’