What are your pet peeves? Can be anything. Share what irritates you to no end.

For example, I really fucking hate when people (seems to be a newer/younger tech user issue) write declarations with a question mark at the end, for example:

>but it isn't though?

Adding a question mark to a statement doesn't make it a question, it just makes you a fucking retard who types like Ron Burgundy reading a teleprompter typo. Learn some fucking grammar for chrissake.