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I struggled to learn lines for Mrs Brown's Boys, says Joe

RTE star Joe Duffy has admitted that he struggled to remember all his lines while filming for the new series of Mrs Brown's Boys.

The radio host joined Irish comic Brendan O'Carroll in Scotland after being asked to appear in an upcoming episode of the award-winning programme.

Viewers will see Joe play the role of two characters -- Mrs Brown's late husband and a psychic -- when the fourth season is aired in January.

And speaking to the Herald, the Liveline presenter admitted that filming the episode was a "terrifying" experience.

"I have to say I was terrified -- trying to remember all the lines. I had a lot of lines to learn but I absolutely loved it.

"It was great. It was a really, really professional operation. Brendan O'Carroll is a genius at what he does."

But Joe dismissed a suggestion that he has now caught the 'acting bug', joking that he isn't expecting any awards for his performance.

"I think people who see my episode won't be calling for my award. If the programme gets a BAFTA this time, I tell you I won't be getting it.

"Brendan will be getting it for writing it, directing it, and the comedy involved. But I don't think I'll be on the list," he said.

The 56-year-old spent three days in Scotland in October where the filming for the fourth series took place.

The programme has gained massive ratings on RTE, with Joe describing it as the "best thing" to happen to the station this year.

"It's been brilliant for RTE in terms of investment and return. RTE got a great deal on it. In fact, it's the best thing that happened to RTE in 2012 -- the best value, the impact it made abroad and so on."

Meanwhile, Joe has just finished filming a new series of Local Heroes -- a nationwide search for inspirational figures in communities.