I really don't know enough about grammar/spelling/pronunciation to be that picky, but I think I was made that way by my English teachers. Some of my pet peeves include the following:
1. One of my friends has a habit of "punctuating" her texts with the word lol. "We're going to the mall lol I saw that hot guy lol you should come next time lol". Another friend will use ellipses like they're going out of style, and she always posts them in big blocks of text. "I just think....maybe if I tried harder....but I'm not sure...." It drives me up the wall. I realize that I'm not the punctuation queen, but "lol" and "......" don't count as punctuation. I picture my first friend hyperventilating from "laughing" and my second friend having to draw deep, sucking breaths between each "sentence".
2. I cannot ever remember the difference between affect and effect. I go out of my way to avoid using those words. Same situation with the word "whom". >.<
3. It's/its they're/their/there two/too/to
4. "fixin' " is not a thing. As in, "I'm fixin' ta go to the grocery store." I say it too. I am from the South. I admit defeat.
I pass three produce stands on the way to work. Every single one of them is offering beefstake tomatoes.
I find that hilarious, only because I don't have to see it everyday.
I do feel your pain though. There's a large sign at a doughnut shop here that reads