grammar implementer 

Noun- referring to obnoxious individuals who are prescriptivist in nature and feel the need to implement the suffocating and irregular rules of English grammar, down the throats of learners. They are known to be particularly vicious to the poor second language learners who sometimes apply the rules of their native tongue, to English.

Oh god, my English teacher is such a stuck-up grammar implementer!

grammar implementer by The unlikely candidate September 2, 2022