(loved trope) when the creator just canonizes random stuff because they can

Phantomarcade (Friday Night Funkin) – on numerous streams, Phantomarcade just says bullshit and its canon. the best example i can think of is the McDonald's one, where if i remember correctly, Boyfriend and Girlfriend had a whole meltdown because they didn't know their McDonald's wasn't 24/7, so they thought McDonald's shut down permanently
Hussie (Homestuck) – occasionally, they would just make posts implying more to Homestuck than initially revealed. a prime example is the Nick of Time, which is Nicholas Cage's God Tier, or their own God Tier being a Huss of Lips