A Hanzo Main is an insult Overwatch players throw around when one of their teammates exclusively plays the archer — Hanzo Shimada — regardless of the situation or how they’re playing.
Diehard fans of the archer will select him even when he’s clearly a poor choice, and refuse to switch characters if they’re struggling to find their mark and everyone else on their team is begging them to switch. To make matters worse, the most toxic Hanzo Mains are notorious for blaming their team for losing a game, even when it was clearly their unwillingness to cooperate that led to defeat.
I had to look it up too. Here is the article.
Sometimes my office can get loud especially when people have "spirited" conversations. It doesn't help when I need to be in meetings while others are loud. But, at times, I would need to listen into their chats in case it involves me. This is when I use the Loop earplugs along with the Shokz and it works quite well. I can concentrate on my call or my work but still be able to pay attention to other's conversations if I need to.