People or persons who have no meaning in this world, they have a boring personality, and they are rather dull. People who are outgoing are usually not fill-ins.
When there is a personal or work controversy, just add "gate" at the end to dramatize it, similar to Janet Jackson's boob-gate during the Super Bowl.
I'm sorry about (fill-in-the-blank)-gate today at our meeting. I don't know why everyone had to make comments about you. It was entirely inappropriate.