I ain’t doing nothing.

It comes from the way it's pronounced, and it's exclusively a mistake that native English speakers make.

One of the most common spelling confusions in the English language, apparently. It's quite easy to see why, I suppose. The one that really grinds my gears for some reason is 'shepard' instead of 'shepherd' when people start discussing their dogs.

I didn’t even go to college and I still manage to use the right one every single time.

I understand this is technically correct, but not only does this not impede effective communication (you know exactly what they meant) but since language evolves over time, I suspect in the future this distinction will be eliminated and these two words cross-pollenating one another will be considered acceptable, or if nothing else slang.

It could be, if you push it to hard! You see what I did their? Im pleased with that. :-)

Espresso, yes / et cetera, YES

Yore.

"Than" is used when you are comparing two items. Use "then" when you are discussing order in time. Examples: I ate pizza, and "then" took a nap! I ate more pizza "than" wings!

Apostrophes are such a pain to explain as they can indicate two things - possession (such as Robert's book or Mary's bicycle) and abbreviation (where letters have been omitted should've, would've, could've, won't). Then you have to try to explain it's to someone. Is it possession or abbreviation? Its is possession and it's is abbreviation. And they go "what?".

Affect is first, effect is second. Usually in casual conversation, affect will be a verb (her emotions affected the decision), and effect will be a noun (the effect was that she got two dozen donuts instead of one). Affect as a noun means sort of your vibe, as in (his affect was one of confidence), effect as a verb is basically the same as affect, doing something that changes something else, but effect is usually used when making that specific change was the goal (he wanted to effect a change in legislation). Affect as a verb means your action has some consequences in the situation around you, effect as a verb means you are doing something for the specific purpose of making that change. One is unintentional, the other is intentional. Hope that clears things up.

My pet peeve is "alot". "Allot" means to award or to allocate. "A Lot" means "a bunch".

I see this as a kind of colloquialism. I use it even though I know it's not technically correct.

Webster's dictionary has literally changed the definition of the word to include today's people's common misuse of the word as "figuratively" or "virtually". So the word has literally list all meaning.

You could be crucified for making that mistake!

Nothing wrong with them saying it, it's when the write it down that it annoys me!

How 'bout-Can I axe you something?

I love it when people get super riled up about misused phonemes!

Is this a thing? I can't recall seeing someone mix up woman and women. Is it happening a lot?

Separator between statements. In English and in programming languages.

Weary is not a homonym of wary but, for all I know, could be a homynym, whatever that is.

You missed a full-stop there.

Which one? The one on my father's side or the one on my mother's?

Barely flower.

Interesting. I have only ever heard it used as "raises the question" and never the other.

It's not even hard. A semicolon is a punctuation mark used to separate items in a list or to link independent but related clauses, whereas the colon is the longest part of the large intestine.

Does it make a difference though? Philosophically? In Switzerland we have that saying aswell, slightly different. There’s a bread called weggli, and it often has a chocolate coin(foifer). And usually when you share one get the weggli, the other the coin: thus :you can’t have the weggli and the foifer.

One time I passed a couple of college students. One was from Iran and the other from Korea. They were speaking in English, but their accents were so strong I could barely understand more than every third word. I was impressed how they could understand each other.

But "everyday" means something different to "every day", which is what I assume you are getting at.