It's called 'The Brits 2013' and features some swear words, a few drug references and the line "it's like a VD clinic, only pricks are in it".
This is what he had to say about it all:
HERE'S A GIFT FROM ME AND GUY (CHAMBERS)
WE WROTE IT ON SATURDAY RECORDED IT ON SUNDAY ….
IF YOU HAVE KIDS IN THE ROOM
DON'T PLAY IT
IT'S CALLED ''THE BRITS 2013''
You can listen to it here if you're interested.