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The 73-year-old actor came back to his role as Mick Shipman for last year's one-off Christmas special, and believes it's 'highly unlikely' there won't be more episodes.
However, in a fairly macabre plea, he said that he'd rather it came sooner rather than later, as he's not getting any younger.
Speaking to The Telegraph, Lamb said: "After how well the Christmas special went down last year, it's highly unlikely there won't be more.
"We're all ready, but when it'll be, that's up to James [Corden], Ruth Jones and the BBC."
He added: "I just hope they knock another one out before I'm dead. That or they can start at the graveside."
It turns out that Larry has been contemplating his own mortality ever since he turned 65 and realised the bulk of his life was behind him.
However, that's not too bad, given the life he's had.
He said: "But then, I realised I have a big life, it's just behind me, and I don't know how much of a life I have in front. Every day gets more precious."
As far as Corden and Jones go, it does seem as if there will be at least one more episode of Gavin and Stacey to come yet.
There's simply too much that needs to be told before the show bows out gracefully for the final time.
In a recent interview with Metro, Corden discussed the prospect further. He said: "I don't know, is the answer. I honestly don't.
"We're all on a WhatsApp text group. All of us and Matt [Horne] and Jo [Page] did a special radio show for BBC Wales the other day that will go out on Christmas, and we all contributed to that somewhat."
He added: "We're always talking, all of us, and Ruth [Jones] and I talk all the time.
"I hope so much we do it. The next one will really be the last, final part, and that is a little too much pressure for my chest to take at the moment, if I'm honest, in amongst the anxiety of 2020.
"If I had any notion of trying to make another Christmas special I don't think I'd be able to breathe.
"So, we'll cross that bridge when we get to it. But I promise you, we won't lead you over that bridge unless we think it will be worth the journey."
Well, fans of the show will want to know whether Smithy and Nessa are getting married, and to find out what happened on that bloody fishing trip.
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