Karen is a common girls
name. But when used as slang, it is meant to refer to a person within a group that is ussually the biggest jerk or annoyance.
Based off of the comedy from Dane Cook. A karen is the
douche of the group.
Karen
will always be an asshole, or douchebag. But we still put up with them anyways.
When calling that person Karen they will not understand it, and
will most likely show the Karen side to themselves, and get angry over being called it.
If anyone is to ask who or what Karen is. You are to say
"Karen is Karen"
in the most simple terms, that is who karen is.