I absolutely cannot fucking stand people saying “on accident”. Drives me up a fucking wall, you did something BY accident, not ON accident. I looked up to find out if it’s grammatically incorrect, and it sure is. It’s used so often that it’s considered acceptable, which is absolutely wild. It sounds so stupid when people say it.
Every time I hear it spoken out loud, it makes me think you’re stupid. I don’t know why I get filled with so much anger when I hear it, but I do. For the love of god please start saying “by accident”.