Transcription:
With the Oxford comma:
we invited the strippers, jfk, and stalin.
[A picture showing a cartoon image of 4 people. JFK, Stalin, and 2 strippers.]
Without the Oxford comma:
we invited the strippers, jfk and stalin.
[A picture showing a cartoon image of 2 people. JFK and Stalin, both dressed in the same stripper outfits as the strippers in the above image.]
Depends on the job, and exactly which English-speaking country you live in. A lot of employers have style guides, and those can mandate using/not using the Oxford comma so you’ll have to pick one and be consistent about it