Journalist and now film maker David Farrier is being sued for defamation over his documentary Tickled.

The film looks into the world of competitive tickling, which involves people being restrained whilst others tickle them.

But a man in the US says the movie falsely accuses him of abusing minors, paedophilia, child pornography and abuse of his students.

David Farrier says he's flattered the film is getting so much attention, even before it's officially released.