The memes in this book are mostly Attack on Titan related.
Disclaimer: I do not own any of the following pictures, unless otherwise stated.
Omg just imagine sitting in your house and he just randomly shows up at your window and starts scrubbing it XD
He's putting his own fingers on the screen as he cleans. And if he swaps hands, he'll end up putting his fingers where he just cleaned. No matter how clean his hands are, they will smudge the screen. He'll get to clean forever!