a Fergie - A Fergie is a self-centered person who sings songs about the

A Fergie is a self-centered person who sings songs about themselves like they're the only one who matters.

My friend is a Fergie. He sings about himself in the shower every day.

My sister is a Fergie. She thinks she's the main character of every story.

My teacher is a Fergie. She thinks every test was made just for her.