It got explained to me early on that in New England, if you asked for a milkshake, you got something made from milk, presumably shaken... Strangely enough, i never verified this claim. It could be merely stirred. If you wanted ice cream in it, you had to order this thing called a frappe. Rhymes with cap. I know, it contradicts all i learned about the silent e. And how could Tom Lehrer be wrong?