Is he a big football ("soccer") fan?
Just seen some YouTube video's and he's wearing a Celtic FC jersey in it. And in the Letterman performance he's wearing an FC St. Pauli hat.
I thought the Pauli hat might just have been because of what St. Pauli stand for, and the type of people that makes up the fanbase, but the Celtic jersey got me thinking he must just be a fan of the sport.
Does anyone know??