On the Wikipedia page for the Pig War, one of the alternate names given is the "Pig and Potato War." This is the result of an edit I made way back in the early days of Wikipedia, based on the source of "that's what they called it on a field trip I went on in 3rd grade, and I'm from Washington, so that's a legit source." And while I think that is a legit source, I have found no evidence that the war was called that in any other source before I made that edit. However, since I made that edit, it seems to have become a very commonly used name for the conflict.
And while that's basically the definition of harmless, it just goes to show how much influence random teens on Wikipedia can have in shaping how actual important things are studied. See also: Random dude who has completely upended all research on Scots by accidentally writing most Scots Wikipedia articles in what he thought was Scots, but that was actually just him trying to write English with a Scottish accent.
I've always thought the best way to be notable is to start an edit war/vandalize a page on Wikipedia.