Andy Samberg is the overgrown hippy called Cuckoo who meets the slightly dippy Rachel on Phi Phi island. She is having a gap year before embarking on to university.
Instead when she returns home she has married stoner Cuckoo much to the shock of her parents Ken (Greg Davies) and Lorna (Helen Baxendale.)
Ken is put out by Cuckoo, their relationship awkward and by the end of the episode Ken offers him money to leave his wife and never to return.
I thought the first episode was rather clunky and not very funny, you can understand Ken's frustrations and rather put out by Cuckoo himself, an overgrown bum who thinks the world owes him a living.
I thought the other characters were thinly sketched out but by the end of the episode when Cuckoo returns with a van to sell jacket potatoes, at least he gathered that he needs to look after his wife.