As we all learn the most appropriate ways to mourn Prince — a legend and an icon who left us today at the young age of 57 — we must never forget the teachers of America’s youth, who are stuck in classrooms, likely surrounded by teens squawking, “Prince who??” One such teacher found his way onto Twitter today, at the hands of a tweeting student. This is what true sadness looks like. Take your time to mourn, buddy. It’s going to be okay.