Macrocious
A person or thing that is so full of themselves they think they're the center of the universe and everyone else is just background noise.
My uncle is macrocious. He thinks he invented the wheel and everyone else is just a passenger.
This TikTok trend is macrocious. It's like everyone is trying to be famous and no one cares about the content.
My friend is macrocious. She texts me 10 times a day and expects me to reply every single time.