Ricky Gervais says his fans think his Twitter account is fake.

'The Office' star claims the majority of his 6 million followers don't believe he posts his own tweets, and admits he will often trick ''naysayers'' on the social networking website into thinking he has a butler who writes messages on his behalf.

Ricky told Absolute Radio: ''A lot of people don't believe it's actually me tweeting. To the naysayers, I usually say I'm Ricky's butler and he's in the bath. I actually genuinely do tend to tweet from the bath though - or in the car - someone else is driving of course. Not the bath, the car.''

The 52-year-old comedian thinks Twitter is a great tool for promoting his shows, but insists he is committed to writing entertaining tweets for his followers.

He added: ''I really enjoy Twitter. It's a Marketing tool but you also have to be entertaining. You can't just say buy this, watch this, buy that, you've really got to give a piece of yourself.''

When Ricky's not using Twitter, he indulges in episodes of 'Family Guy' and admits he is still obsessed with the show since voicing wisecracking Dolphin 'Billy Finn' on the show back in 2012.

He said: ''I literally watch 'Family Guy' every night. I've probably seen every episode at least three times''