Nobody's ever remarked on it, but I can tell people get annoyed sometimes when, after I drawl all my words and then pause, the other person takes it as a cue to start talking, but then I interrupt to finish my earlier unfinished thought.

In other words, talking too slowly, pausing as if to let the other person talk, and then interrupting to finish my thought process annoys people. And I keep doing it unintentionally. Really, I don't mean to. It just seems like I can't stop.