Geology: I think geology should be one of the big fields of science. It doesn’t really fit neatly as a branch of physics, chemistry, or biology since it draws on all three.
Physics: No. For one, everything is physics so that argument doesn't mean anything.
Biology: UnLeSs iT's StAmP CoLlEcTiNg, right?
Biology: Also we’re called ‘the big three’, if we added another then it’d be, like, more than three. Some mysterious higher number.
Chemistry: Besides, we’re the big fields because we’re the most important and popular.
Geology: Geology is important! We’re the ones who find all the oil to mine!
Biology: Yeah, could you stop doing that, actually? It’s kinda, y’know, causing the slow apocalypse as we speak. But at least it’s better than the fast nuclear apocalypse, physics.
Physics: Ummm… You know what? I’ve had enough of you stamp collectors with your… uh… collections of things! I'm not letting you join our club unless you can do math.
Biology: *Gasps* not math…
Geology: *hides rock collection behind back* Hey, I do… math. Sometimes.
Physics: Yeah? Like what?
Geology: Oh, y’know, just some geometry and a little geophysical fluid dynamics of the entire mantle, ocean, and atmosphere.
Physics: Oh, shit, I can't even do that. You’re in.
Chemistry: Alright, but don’t let the social sciences know we’re letting new people in or-