IT'S MATH, NOT MATHS, DAMMIT!!! D:<

Goddamn limey faggots.

You don't say "Chemistries", do you?
Or "Calculuses" (Calculi?)?
Or "Algebras"?
Or "Psychologies"?

While I've become accustomed to Math I understand why people would say Maths. I wouldn't say this debate will change people's perceptions as they've become accustomed to saying things a certain way, and unless you physically beat them senseless they'll seldom change their ways.