Where did "Cheese Slope" get its name? Why is this piece called a "cheese slope"?  "Slope" I get; but "cheese"?
A cheese slope resembles a chunk of cheese from a cheese wheel. They happen to also be the perfect size for minifigures to interact with:



‘Lego Cheese Farm’  by AIatariel, http://www.flickr.com/photos/alatariel1181/10582728886/