e cleanser
A person who acts like they’re the only one who knows the right way to do things and won’t stop telling you how wrong you are.
He corrected my grammar and then said 'you’re so bad at grammar you can’t even write a full sentence.'
She said 'you didn’t even put the comma there' and then laughed at me like I’d failed a test.
He corrected my spelling and then said 'you’re so stupid you can’t even spell your own name.'