Good grammar, famously, is the difference between knowing your shit and knowing you're shit.
One noble hero is trying to teach the world about punctuation by fixing all the misplaced apostrophes loosely scattered around his city.
The anonymous justice warrior works his magic in Bristol, England, the hometown of mysterious street artist Banksy, but works a very different kind of magic on the city's streets.
He calls himself the "Grammar Vigilante" and has been using stickers to cover up mistakes on stores and street signs for 13 years.
He told the BBC,
I do think it's a cause worth pursuing. I have felt extremely nervous. The heart has been thumping.
They pop up in the most random, frustrating places where they simply don't belong.
Sometimes, the mistakes are on signs that are quite high up, so the Grammar Vigilante carries around an "apostrophiser" to get to areas that would otherwise be out of reach.
He doesn't believe he's breaking the law. He told the BBC,
It's more of a crime to have the apostrophes wrong in the first place.
His noble mission caught the attention of people on Twitter, who pointed out society has a problem — and that problem is apostrophes popping up where they don't belong.
Take this poor apostrophe, who is a little confused.
This little guy shouldn't be in "businesse's." He needs a new home.
In this case, some apostrophes just don't know where to go.
I don't even know where to start with this one.
Some people think the Grammar Vigilante should extend his mission beyond apostrophes.
But just like a superhero in every action movie from the last decade, the Grammar Vigilante has to deal with the critics, doubters and non-believers.
Take for example this guy, who tried to ruin the fun by pointing out something admittedly correct.