From The Sun -n IT TOOK years to make Avatar, so it was enviable the cast would experience cock-ups along the way.

SAM WORTHINGTON, who plays Jake Sully in the box office hit, was filming test shots for a waterfall scene in Hawaii when a passer-by asked if he was working on a gay porn movie.

The Aussie actor happened to be wearing nothing but a g-string, fake animal ears and a felt tale.

Sam said: “The guy rocked up and said ‘What are you doing?’

“I assured him it was a proper movie but when he didn’t seem convinced I pointed out that the guy filming me was the famous director JAMES CAMERON.

“The guy looked over, saw Jim’s rudimentary camera, looked back at me in the ears, tail and g-string the director had given me to wear and said ‘Well, he’s come down in the world since Titanic.”