Person 1 "Hey, check out this article about the Flat Earth, it's what convinced me"
Person 2 "..."
Person 1 "...you ok?"
Person 2 "...wha...? Oh, yeah, I just had a moment of Stultus Aphasia, sorry."
Stultus cunt (meaning stupid cunt) is the perfect way to insult someone you're not a fan of. As only a few people know what stultus cunt means, outsiders won't think of you badly.
Person 1: Mara is a stultus cunt, I hate her so much.
Person 2: Yeah, she really is the biggest stultus cunt that exists.