It's not exactly "wacky," but I wish I could count how many times I've heard people say, "Oh, I like bourbon and whiskey" or "I like scotch and whiskey" as thought whiskey were somehow a separate product. This odd turn of phrase happens even with people who seem to know a little bit about it.
This also crops up on bar menus. One of my local favorites has these two sections: "Single Malt Scotch" (Laphroaig, Balvenie, essentially anything with a gaelic name) and "Bourbon and Whiskey" (for Jim Beam, Crown Royal, Jack Daniel's, and even Johnnie Walker.) And this is a fairly high-tab joint, too.