I like to keep my team on their toes. I send a "hi" and they wonder "What does he want from me", "Do I answer", "Is it going to be a big task". Even more annoying is the surprise huddle that starts ringing on slack especially if it's near quitting time, because they know it's nothing good and it's usually overtime.
But I got even an even worse one for you guys. Typing animation that, I **** you not, goes on for half an hour and after that you get 2 sentences at most. This is coming from native English speakers. My boss hated this, so much so that he made people write things out in a notepad before they send him a message, so they could just copy paste. Now because of that I send rapid fire messages, so typically 10 messages from me could be sent in a nice 1 to 2 sentence message and the sad thing is I was never a slow typer...