A scruffy bum applied for the position of wine taster at an exclusive winery. Unable to devise a way to get rid of the bum, the owner decided to test him. He tasted the first glass of wine and pronounced, "It's a red wine, a nice muscat, three years old, grown on a north-facing slope, matured in steel containers."
"Why, that's right," said the surprised owner and handed him another glass. The bum announced, "This is a cabernet, eight years old, grown on a southwestern slope, and aged in oak barrels."
"Correct again," said the owner. He gave him a third glass.
"This is Champagne , a little fruity, but quite worthwhile." The owner was astonished. He whispered to his secretary, who left and returned a few minutes later with another glass.