Coffee Appreciation

I don't want to assume anything here, but man maths has been a thing for as long as I can remember, a colloquial term where you do back of an envelope calculations that make a hell of a lot of theorised life or time improvement assumptions to justify spending a large amount of money.

You often see it in bikes and cars, if I upgrade my car to this faster car or lighter bike, then I'll get to my destination quicker, or my rides will be faster, so I'm saving x hours a year which works out at x value so that means I should spend 10 grand on this bike or 50 grand on this car.

I was assuming that girl maths was a way for women to co-opt the term and therefore make it so it's not just a man thing.