I've seen the Mrs. Brown's boys dvd's in the store. Now is the time to ask the question I've been wondering for so long. Is that a woman or a man in drag?
It's a man-- Brendan O'Carroll-- in drag. He's been writing & performing the character on stage (and filming the occasional performance) for close to 20 years, I believe (along with most of the cast, who are all related to him in one way or another).
'Mrs. Brown's Boys' is marmite telly. You either love it or hate it. The folks who hate it will spend all kinds of time detailing how crass, low-brow and clichéd it is, and despair at having to share oxygen with people who could actually enjoy something like that. The folks who love it are usually too busy trying to catch their breath and wipe the tears from their eyes to care.
Personally, I love it, because I don't mind a cliché, as long as it's pulled off well. This is a show that can spend five whole minutes telegraphing a single joke, but it still feels worth it when they get to the punch-line, because it always goes that little bit further than you were expecting. Having done my time in theatre, I also appreciate the casual abuse of the 4th wall.