Basic

(n) A word to describe anyone who is not up to your group's standards in any category. Everything they do is just sub-standard quality and falls short to the quality level of your group.

Example:

Noun:

Jackie - "Are these girls dancing or having seizures?"

Natalie - "Basics everywhere"

Adjective:

Natalie - "Wow, that bitch is extremely rude and snobby"

Jackie - "Basic bitch honey. Basic bitch."