Pac-Man and the Ghost
Have you ever gone to the toilet and suddenly realized that you didn’t take your phone with you? After your session there, you would probably know the total number of floor and wall tiles, the ingredients in the hand soap and air freshener, and every other irrelevant information you can probably gather.
This person was probably bored out of their mind and decided to challenge himself or herself to count the number of holes in the air vent, and then they noticed that not all the holes are actually the same; there are some Eater Eggs hidden in this seemingly ordinary pattern – have you noticed Pac-Man and the three ghosts following him?