"Ogey Rrat refers to a short clip of Hololive Vtuber Usada Pekora playing Metal Gear Solid 3, in which she utters the phrase "Okay, rrrat!" after killing a rat and picking up a "R.RAT" (Russian ration). Since late 2020, the catchphrase became popular among Hololive fans accross boards in 4chan, where "rrat" became synonym with narrative, whereas "ogey" was associated with a reaction image of Pekora with eyes wide-open, often used to call out rrats or shitposts." - Know Your Meme