i've gone through like 8 different wikipedia lists of opossums, related species, and names of fictional opossums, and i still don't get the "scremma" thing. i feel like there's a regional barrier here since we don't have opossums in europe, so i'd very much appreciate an explanation

There's a meme of a posting a picture of a possum screaming, and usually people call it "screm"

oh i think I've seen that. didn't see it in search suggestions, though