Although it does make me laugh, Do you not think some of the jokes are recycled? The hen night/funeral scene is very similar to the Only Fools and Horses sketch when they turn up at the funeral dressed as Batman and Robin. It also seems to have similarities to Father Ted (and I don't mean the word fecking).
Actually when I saw the inflatable giant penis scene it reminded me more of the episode of the office where ricky gervais dances about dressed up as one. But yes it definitely felt 'familiar'
As bigbird67 mentioned earlier, the old man in the chair who doesn't speak much if at all reminds me of father jack and I keep expecting him to come out with random stuff.
The word feck itself doesn't remind me of father ted as it's something I hear used in everyday speak where I live but I can see how an audience in GB would make the connection as father ted is likely their main reference point. the word existed before the show, but can't deny that it popularised the use of it. Perhaps the makers/writers of mrs browns boys should include other random irish exclamations like "boysadear" or "jakers oh!" where they might previously have used feck.
Another thing I think they could improve is the theme music, it's a bit rubbish tbh. I do like the apparent ad libbing in some of the episodes like they've thought of something off the cuff when someone has fluffed something up. Very raw feel to it.