The language of Math and English combined. Usually used by a math teacher who is trying to categorize where the math terms go in the dictionary and makes up a whole new language in the fluster of rejections and questions by their students.
"Where would you find the use for these terms outside of school?" , "Yeah, it's pointless!"
"Hey quiet down class, if you speak another language at home, this is like speaking another language, see Mathlish is quite useful!"