Brown cows give chocolate milk.
Yes, but when they laugh, does chocolate milk come out of their noses?
When I was a kid, my family ran a creamery with a store front. One regular customer, an older gentleman, insisted that he only get milk from a Brown Cow. I could not take a bottle from the display case in the store front because, obviously, that milk did not come from a brown cow. I had to go to one of the coolers in the back to get a bottle from the special "Brown Cow" cases that we stored back there. Worked every time.