Heard this one yesterday from one of the coworkers at my new job.
Troll level expert.
One of my coworkers sent the boss a message last Christmas, red letters on green background, cc’d to all IT ppl.
Why is this trolling? Boss is red/green colorblind. Boss went around asking everyone if there were words on the message. Luckily boss has a great sense of humor and laughed about it.