Van Persie and Kagawa let loose at Manchester United Christmas Bash...

It is a football ritual that has been honoured throughout the ages, but Manchester United appear to have taken 'making the new guy sing a stupid song' to the next level.
When Rio Ferdinand tweeted that Shinji Kagawa 'is one funny guy' during Manchester United's Christmas bash on Saturday evening, you knew that something pretty funny had gone on - and my word it did

The former Borussia Dortmund midfielder stepped up to the plate in the best way possible to perform a rather peculiar version of the annoyingly catch South Korean pop hit 'Gangnam Style'. It really does have to be seen to be believed.

Not to be outdone, fellow summer signing Robin van Persie stepped up to the mic to give his own version of 'Glory, glory Man United', which luckily for us was over not long after it begun.

The former Borussia Dortmund midfielder stepped up to the plate in the best way possible to perform a rather peculiar version of the annoyingly catch South Korean pop hit 'Gangnam Style'. It really does have to be seen to be believed.

Not to be outdone, fellow summer signing Robin van Persie stepped up to the mic to give his own version of 'Glory, glory Man United', which luckily for us was over not long after it begun.

Enjoy the videos...

RVP singing 'Glory Glory'

Kagawa's Gangnam Style