means wut up gurl
?

From STEM, an abbreviation short for "Science, Technology, Engineering and Mathematics", a STEMlord is a pejorative term for a particular kind of person who has studied in these areas at university or works in these fields who holds a pretentious, condescending attitude to anyone who has studied in any other fields, particularly the Arts and Humanities. They typically believe themselves to be more "intelligent" and "rational", while generally remaining incredibly ignorant outside of their areas of expertise and having the charisma of a rotting pig's backside.

derog. A white urban tough, of working class or lower middle class origins.

Hey Mas is a meaning of a very fat person but is also intelligent. He/She loves throwing food down their throat when they are at home and their mum has just came back from shopping