I think there's a certain je ne sais quoi for memes that say to the viewer "This joke needed to be made but I didn't want to spend more than a couple minutes on it."
A distichia is an eyelash that arises from an abnormal part of the eyelid. This abnormality, attributed to a genetic mutation, is known to affect dogs and humans.
If you zoom way in on his official portrait you can see that the flesh from his brow folds over and almost completely covers his upper eyelids; you can mostly only see the eyelashes poking out and what you can see of the eyelids are in shadow:
Your countenance has to achieve a certain visual distance from Tim & Eric Awesome Show: Great Job! for this to work in your favor. JD Vance has yet to realize this