u/DocMcMoth

I only ever say ads for this, never watched it myself. I'm decently confident it was from Nickelodeon, and aired somewhere between the late 2000s and early 2010s, I'd put it somewhere between 2009-2014. Pretty sure it was a tv show or mini-series, but can't say for certain.

The ads were all in live action, and a narrator would describe a series of strange and unlikely scenarios, usually involving magic or monsters, and punctuated by the main cast shouting some sort of nonsense one-word phrase as a solution.
I want to say this phrase was the title of the show, but having looked through the list of programs on nick at the time, I couldn't find anything that rang any bells. It appeared to take place in a relatively mundane modern US town, typical "hidden fantasy world" type stuff I think.
In my head it has a similar vibe to The Troop but that could be my child mind misunderstanding things and forming false connections.
That's about all I can remember, I'll update with more info if I can think of or come across anything.