Heard any good cow jokes lately?

Comedian catapults career.
I pass this on in the interest of science:
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,