larping a fandom is a thing however, but if you don't know a basic thing then you shouldnt be in it. however if its niche or only appeared once then don't yell at someone for not knowing them
if you still don't know what larping means, here's the explanation for you so you don't look like a baby who just learned the f**k slur; Larp stands for "live action role play" which means: you can irl role play as your favourite character in real life or as a parody. larping is not a word that should be used when someone doesn't know your favorite show but pretending they are.