What irritates you the most with your own language?
Mine is people who separate words when they write. I'm Norwegian, and we can string together words indefinetly to make a new word. The never ending word may not make any sense, but it is gramatically correct
Still, people write words the wrong way by separating them.
Examples:
"Ananas ringer" means "the pineapple is calling" when written the wrong way. The correct way is "ananasringer" and it means "pineapple rings" (from a tin).
"Prinsesse pult i vinkel" means "a princess fucked at an angle". The correct way to write it is "prinsessepult i vinkel", and it means "an angeled princess desk" (a desk for children, obviously)
"Koke bøker" means "to cook books". The correct way is "kokebøker" and means "cookbooks"
We are English speaking and as someone raising a kid it's really difficult at their age to teach and explain all the words that are spelled the same but can sound different. She loves to learn so I try my best. I wrote a sentence down that she likes to show people and read to them just to start but always asks why it is the way it is.
"My daughter liked when I read her a book the other day so I make it a habit to read 1 book a day with her"
That's the sentence she's practicing. There is a lot more to get through though.