Do you ever simply not understand a piece of text no matter how many times you read it despite the fact that you understand the language and individual words?

This post made me think of it as it's a good example of this.

Every now and then I encounter writing like this (often it's something someone is showing me) and I just read it, and then I re-read it and then I re-re-read it and my mind just stays completely blank and I have no clue of what it's saying. This seems to be happening to me quite regularly and honestly I feel quite stupid. I'm wondering if this is some ADHD / autism thing, granted that english is not my first language. However, like I said, it's not that I don't understand the words - just not the meaning of them together.