obnoxiousivity
A trick you pull on stupid people to make them think they're smart by correcting your spelling.
'You spelled 'obnoxious' wrong. It's 'obnoxious'.', said by a kid who spelled 'hello' as 'heloo'.
'You're just trying to make me feel dumb.', said by a kid who spelled 'smart' as 'smaert'.
'You're like a spelling detective with a grudge.', said by my mom who spelled 'grudge' as 'grudged'.