Those who do not know JD Vance’s sister or comedian Blaire Erskine fell prey to the video — though the content of the video was enough to establish that it was a satirical video. Comedian Blaire Erskine is known for her spoof videos in which she makes fun of right-wing political figures. After this viral video posing as JD Vance’s sister, she made fun of defense secretary Pete Hegseth.