There would be no excuses if any members of the Lions squad failed to get into party mode after their stunning 41 - 16 win over Australia in Sydney. 

Sean O'Brien was one of those who hasn't let the grass grow under his feet. 

Perhaps he will have no memory of the event, but thanks to the wonders of recording technology he can look back at himself getting up on stage in a Syndey bar and belting out the appropriately titled 'Little Lion Man'.

 Judge his vocals for yourself...