Factorializing
A math thing where you multiply all the numbers up to a certain point, but it's also used to insult people who look like they're about to burst.
"She's not a size four, she's a factorializing size four!", @FashionHater2025
"He looks like he's got a factorializing stomach.", @StomachLover101
"That guy is a factorializing meatball.", @MeatballLover3000