Unless you鈥檝e been living hermit-like in a cave in Sefton Park, the chances are that over the past decade you鈥檒l have seen at least one performance of Brick Up the Mersey Tunnels.
In fact, in its 10-year history, the original Scouse comedy has sold 175,000 tickets ?the equivalent of a third of the entire population of the city, reviving the fortunes of the Royal Court along the way.
So how on earth do you follow that?
Writer Nicky Allt had a stab at it with The Wirral Strikes Back, which he staged at the Empire in 2010 and which followed on from the ending of the first play, but with an entirely new set of characters.
It wasn鈥檛, I鈥檓 sure Allt will concede, quite the success he hoped.
Now seven years on he鈥檚 teamed up with fellow Brick Up creator Dave Kirby once more to revisit Dickie Lewis, Ann Twacky, Gerry Gardner and co in a sort-of official sequel, again following on from the ending of the original, but this time from the Wirral鈥檚 perspective.
Thus Eithne Browne鈥檚 redoubtable Tory blue-clad Heswall warrior queen Ann Twacky takes centre stage in a plot which (eventually) also includes plans for those vital road links under the Mersey.
I say eventually, because the first half is more of a catch-up with all the characters, and it鈥檚 really only after the interval the plot truly swings in to action, as Ann decides it is indeed time for the Wirral to strike back.
At the start of the show, we see her strangely cowed as newly-emboldened husband Dennis rings a bell and demands to be waited on hand and foot.
Dennis, so sweet in the first show, has turned into a bit of a git in Brick Up 2, as has winkle salesman Elliot Neston, living in domestic 鈥榖liss鈥?in Wirral with Maggie (Suzanne Collins) from the greasy spoon caff.
Meanwhile Wirral seems perfectly happy to still find itself cut off from Liverpool, and even fantasist builder Dickie Lewis (Drew Schofield) is missing the peninsula.
One of my criticisms of the last production of Brick Up, staged 12 months ago, was its lack of pace.
In contrast, this new show has bags of energy, with director Bob Eaton keeping the pace ticking along from scene to scene, hopping backwards and forwards over the Mersey.
There鈥檚 just a few minutes, right at the end of the first half, where it becomes a bit frenetic and shouty.
And while it鈥檚 undoubtedly a crowd pleaser, be warned it鈥檚 also an awful lot cruder than the original Brick Up ?with Schofield鈥檚 Dickie Lewis and Francis Tucker鈥檚 sex mad Liz Card vying to out do each other.
It鈥檚 not often you hear the Royal Court audience, which has a high tolerance level for rudery, wincing.
The show is punctuated by songs, including a very funny ditty sung by Drew Schofield which includes the lines 鈥渂een lookin鈥?for Bin Laden, he鈥檚 at the bottom of me garden鈥?
And keep an eye out for an unexpected plot twist at the end.