Which way do you cut a sandwich?

Posted by PassionateCrashOut@reddit | AskUK | View on Reddit | 94 comments

So for context, I have always sliced a sandwich after it's creation diagonally, it's aesthetically pleasing and allows you to have an optimal starting area to bite, being one of the two corners. And this seems common across sandwiches you find in supermarkets. But I had lunch at a friend's house the other day, and the disagreement followed, when the sandwich was handed to me sliced horizontally giving two rectangular slabs. So it got me thinking, are there people out there who go one step further and cut vertically, this should be illegal! So how do you cut a sandwich?