I'm not using slang I'm using the word "geese" to get across the point that there are multiple goose birds.
If that slang term exists it is not common enough for me to know about it.
But I'll start using it if it's effectively offensive enough. I don't know how to insult Canadians though because they're so polite and internally proud that any shots get deflected. I mean ha ha maple syrup, hockey, "bacon", legal weed, good health care, snow, and
Snow.
“This is going to become a bad meme,” Todd observed.