"This lady grabbed my hand. She was incredibly strong and so I assumed it was a mum, and it was. I got ripped into the audience and she literally ripped the watch off of my wrist and she held up the watch and, in Portuguese, she said, 'I've got his watch, I've got his watch!' - and then she got tackled by everyone else... It was pretty wild." Actor Zac Efron on his crazy Brazilian fans.