The author had uploaded a video in 2007 and used to joke about how Alfred's grandfather was named Grandpa Google and how he would eventually destroy YouTube. A few years later, turns out she was right.
An in-universe example in Teh Stream game, the author jokes about how one would play the original Resident Evil and imagine that, someday, they'd make a sequel about an alien invasion in Africa.
Ada Wong: The Worst Spy Ever pokes fun at the fact Ada uses her real name for every mission, and this ultimately blows her cover. A few years later, Ada works as a spy again in Resident Evil: Damnation, guess what happens when she loudly announces her name is Ada Wong.
They Changed It, Now It Sucks: Older videos used to be made with Paint and Windows Movie Maker only, videos before the author's return in 2013 used to be made with the same tools plus a little bit of Photoshop. Once she returned in 2013 with a brand new style and changed her animation tools to Sony Vegas and hand-drawn animation, many were displeased and stated her old style to be better.