"About halfway through, I bit in and felt something hard and crunchy." That’s what NYU senior Benjamin Jarosch declared after eating part of a found muffin, and he wasn’t talking about a walnut: his innocuous-looking blueberry muffin was stuffed with three razorblades. Jarosch and his buddies had discovered the muffin, along with four others, wrapped in tin foil, upon arriving in the classroom. It seems they were left over from a previous class and were......