The actor didn't realise his ears were so big until he chopped off his locks, and immediately regretted his bold move.

"I did it on my own," the actor told U.S. chat show host Ellen Degeneres. "I like to change up in every movie; I like to look different and I'd been wanting to do it. But one thing you've gotta do before you shave your head is lift your hair up around your ears and see how big they are, because you you don't know until you shave your head.

"I looked at myself in the mirror and I thought, 'Y'know, I could fly!'

"It's a little shocking to do that for the first time. I'd never done it in a motion picture."