"So, I show up for class today. I walk in and wave to the students as I head straight for the control panel for the computer hookups. I notice the student sitting by the panel (Alex) is dressed very nicely! All in black. With a tie! So of course I compliment him on his attire. Then I notice the young lady next to him is in black as well. And I compliment her on her excellent clothing choice. This process goes on for a while (me noticing individuals wearing black) until eventually I turn my full attention to the whole class and am wonderfully surprised and delighted to notice that nearly the whole class has dressed up in black. Ha! Totally awesome prank! Here I've been considering what to dress up as for Halloween -- and my students went and dressed up as me!" -- Bill Vicars