Absolutely. And if he was swearing occasionally, I'd say it was a personality trait. But swearing 100 times in an hour? That's rather extreme -- and a high stress situation like an interview is exactly when such a disorder would show up the most.
So, why didn't the interviewer ask the important question about apparently excessive swearing?
It's as if interviewers are lazy and guess.
to be fair, i feel like the new entries in the DSM V are basically personality traits.