Knowledge as solid, as petrified wood

A vivid dream last night. Dreamed I was back in college starting a class for the first day and there was assigned seats. The seats were not labeled though. You had to solve puzzles to get the answer to which seat you were assigned. The clues were in the classroom, kind of like an escape room exercise. But there was no clues for me. No, my seat was the only one labeled. In a giant font to say the least. When I locked eyes with the teacher in dismay, he said with a smirk, "It's poor fashion to tease and humiliate the village idiot.". That's when I woke up. And much to my surprise, I woke up with morning wood. What the hell is that supposed to mean?