While converting a guest room into an office, I found an old gem that I had preserved.
When I was pursuing my undergraduate degree, there was a professor named Dr. Brian Morley. Dr. Morley was an awesome teacher, but I noticed every time that he went home he would carry a HUGE stack of papers, obviously more than a single man could grade. Now, all of the significant essays and homework projects received meticulous grading, but the smaller 2-page papers in each class? People became suspicious that perhaps he did not really read them. And so, I was drafted to find out.
Now you see, most people stick "hidden" text into their papers, like, "if you read this, I will buy you a coffee." Not me! I wanted to go for the gold, to prove beyond a shadow of a doubt whether Dr. Morley reads all of his papers!
And so, I wrote a normal 2-page essay, and added a third page like so:

If you are having trouble reading that, it is:
MY PLAN TO TAKE OVER THE WORLD
1: Tie up Dr. Morley
2: Distract Mormons with Tied Up Dr. Morley
3: Steal
Golden Plates from Mormons
4: Trade
Golden Plates for Cheese
5: Give Cheese to the U.N.
6: Take Over World
When I got my paper back, the grade was as follows:
And thus, Part 2 of the experiment: I showed him the paper. Dr. Morley laughed so hard that he bent backwards into an L-shape. From that day forward, every paper of mine that he graded had extra comments involving the text. I miss being in his classes.