Lack minded individual - A lack minded individual is a group of people who are all eq

A lack minded individual is a group of people who are all equally dumb and don’t realize it.

My class is a lack minded individual. We all failed the quiz and still think we did great.

My dad and his buddies are a lack minded individual. They all think they’re the best at video games, even though they lose every time.

My sister and her friends are a lack minded individual. They all think they’re the best singers, even though they sound like cats fighting.