Jokes that use humor to stereotype a group as stupid or inept are often repeated substituting different ethnic groups. this is an example of the concept of cultural relativism stereotype interchangeability selective identity universal applicability

Jokes that use humor to stereotype a group as stupid or inept are often repeated substituting different ethnic groups. this is an example of the concept of: stereotype interchangeability
stereotype interchangeability is a form of perception that most people used to describe some characteristic of a specific ethnic, gender or race. (for example asian can't drive, Vegans are weak, etc)