WHAT was the worst part of filming 'A Home at the End of the World', for Colin Farrell?

Wearing a wig.

"It was like they shaved a dog, poured glue on my head and put a blow dryer on it. I wanted to cut all my scenes until we got to the scene where it's all cut off.

"You have no idea how bad that was. It's like going to church when I was 10. It was horrible.

"Somebody asked me, 'What was it like when you looked in the mirror with that wig?' I said, 'Are you kidding?

Why would I look in a mirror?"