Yeah, I know someone who, if he's tired, like especially really really tired, he goes from being able to be covert, to....well, it's super extreme. I mean, minutes (and not just one, several) to finish a short sentence. Though, I have to qualify something. I don't know how unusual he is, but the vast majority of his life he is covert. Even if he is tired, he can still mostly pass. But....well, he hates not being able to stutter (even though still can't bring himself to do it in front of certain people, especially people from growing up who really don't know he stutters -- he didn't know til in his thirties, tho it was always there). So, he will actually use the phone to be able to stutter. Like, if he has to call the bank, and he's semi-anonymous, he will stutter. Even if it's really bad and makes the conversation take forever and makes the other person uncomfortable and possibly not give him full answers, he will do it for the release, the freedom of it. Anyway, with me, he will stutter. But once he turns off all the covert stuff, he can't really go back easily in the midst of things. So, one time when I talked to him (phone) after he'd barely slept for three days, it was as bad as I described above. But what I'm saying is that was both very extreme, going three days like that, plus he was talking to me, so he didn't start out trying to be covert, so it was....well, even he was freaked out because that was the worst it had ever been. I truly, at times, could not remember the beginning of his sentence by the end which was awful cause then I'd have to ask him to repeat. Probably not that extreme for you?