The comedy equivalent of dad jokes. It's unsubtle, not actually funny and Rhys Thomas really needs to give it a rest.
I thought some of the Brain Pern "mockumentaries" that Rhys Thomas made were, by comparison, quite creative and entertaining -- and Simon Day's deadpan performances added a lot.
Perhaps it's that, although Brian Pern was played by Simon Day, here the Kemp brothers are actually playing themselves? It's not that the Kemp brothers are bad actors, but that Rhys Thomas seems unable to find the right "distance" from the people he is caricaturing. (The marriage to both Pepsi and Shirlie was an interesting idea, but other than joking that they would jointly get 100% of their husband's assets on divorce, little was made of it.)