e cleanser
A person who thinks they’re the best at everything and won’t stop telling you how wrong you are.
He corrected my spelling and then said 'you’re so bad at spelling you can’t even spell your own name.'
She said 'you didn’t even write the whole sentence' and then spelled it out for me like I was a kid.
He corrected my math and then said 'you’re so dumb you can’t even do basic math.'