April Fools' Desktop Prank

Stu went home to visit family this past weekend, so I fed his cats while he was out of town. He made the mistake of leaving his computer on and unprotected, so close to April Fools’ Day, so I took advantage of the opportunity. I made the folder below and added it to his desktop, screencapped it, deleted the folder, and made the image his desktop so that the “new folder” was unclickable: