On the ticket for Jethro's performance at Fairfield Concert Hall on Monday, December 9, it says: "Warning: Not for the Vicar!", writes John Geoghegan.

Indeed, the legendary Cornish stand-up is not for the faint-hearted. His no-holds barred, foul-mouthed and sexually explicit routine makes Jim Davidson look politically correct. This did not seem to bother his Croydon audience, however, where he brought the house down.

Fans of the self-proclaimed yokel, whose performance videos sell by the bucketload, will be familiar with his bawdy style. Slurring drunkenly in his Cornish accent, portly, bearded Jethro looks and sounds like your typical West Country farmer, which of course adds to his comic appeal.

Drawing on his rural background, involving overweight farmers' wives, naughty vicars and farmyard animals, Jethro also throws in a few local references, making jokes at the expense of Lewisham and Thornton Heath, which, needless to say, goes down well.

The show was a sell-out, and I was surprised to notice that, for a risque comedy performance, most of the audience were middle-aged. There were even many old ladies, who did not flinch at his non-stop gags, no matter how blue they were (and they did get seriously blue!).

Jethro was supported by Doncaster crooner, Shaun Perry, who belted out a few old favourites throughout the show. Jethro's not a bad singer either, performing a few Country & Western classics in his deep tones, including Jim Reeves' Adios Amigos'. This family cabaret aspect of the show sat curiously with the filthy jokes.

Whatever you think of his brand of humour, 54-year-old Jethro comes out with some terrific one-liners. Particularly memorable was his opener: "I've had two unhappy marriages My first wife died and this bugger won't."

He is very much from the old school, disregarding the PC sensibility of most contemporary mainstream comedy.The racism, sexism and homophobia will certainly not be everyone's cup of tea and I certainly found some of it offensive.

But, if you like your jokes hard, fast and downright dirty, combined with a few sugary ballads, then Jethro's your man.