In 2013, the Master of Science in Medical Physiology first year students conspired to all come to morning lecture wearing cardigan sweaters. The lecturer for that day, Dr. Tom Nosek, a regular wearer of cardigan sweaters "since birth", didn't notice that everyone was wearing one until it was pointed out to him.
Every Spring since, Dr. Nosek proclaims a "Cardigan Day" for the first year M.S.M.P. students and asks them to wear a cardigan to lecture. Today was that day for the class entering in Fall 2016.