A rather long preamble to the main point of what someone is trying to say. It's the story before the story that people with dyslexia often find themselves telling before they can tell you the thing they wanted to tell you.
A lot of dyslexisms end with the phrase, "..Wait, what were we talking about?" or, "...I'm sorry, I've lost my train of thought."
A stranger asked me a question the other day and I found myself talking to her for about 15 minutes before she interrupted and said, "Can you please just answer my question?" Embarrassed, I asked that she forgive me my dyslexism and to please repeat the question.
She replied, "Yes, of course!" then repeated her question, "Are you in line for the bathroom?"