A comedian performed a stand-up routine to a field of cows in an experiment intended to see if they have a sense of humour.Milton Jones was joined by cow expert Bruce Woodacre on a Hertfordshire farm to test the reaction of a herd of fresians.He performed a special set of visual and verbal jokes, called Pull The Udder One, while Mr Woodacre monitored the cows' reaction.Gags included: "So you cows say you're vegetarians - but how come you all wear leather, eh?" and: "Went to one of those farmers markets the other day - bought a couple of farmers. Should taste lovely!"Mr Jones said: "Writing comedy for cows was very different to my day job but a comedian plays to his audience, so I wrote a raft of new material to really get under their hides."They were a tough crowd to begin with, although I've played to tougher, and whilst I tried not to milk it too much when I was up there, in the end I can say hand on heart they were udderly brilliant."Mr Woodacre, who has studied cow behaviour for more than 40 years, said: "Happy cows are more productive and there's a chance we've stumbled across something here."Most of the herd crowded closely round the stage and jostled for a good position. They had their mouths open and their ears laid back, indicating they were relaxed and content."Not everyone was entertained though - I definitely heard some low heckling moos and there were even a few walk-outs."The stunt was set up by Bel UK, makers of The Laughing Cow cheese.Source: orange