FABNERD - A FABNERD is like a superhero who forgot to wear pants and s

A FABNERD is like a superhero who forgot to wear pants and still thinks he's fancy.

My math teacher is a FABNERD. He wore pajamas to class and called it a fashion statement.

My dad is a FABNERD. He got a tattoo of a calculator and thinks he's a genius.

My friend is a FABNERD. He claims he's a wizard but he can't even solve a simple equation.