Strange Equation

Someone dropped an algebra test in front of me. "What is this?" I ask myself. I haven't done these for years. Everyone around me had their heads down in diligent working positions. As I tried to read the first problem, a strange bit of mentality distracted me away from figuring it out. I know how to do these, I actually used to get a high from knowing so in high school. I began to dissociate. What is going on here!? I leaned forward in my desk to tap the shoulder of the scruffy-haired guy sitting in front of me. He wore a light blue button-up shirt, sleeves rolled at the elbows. I thought I recognized that shade of blue. He turned around and made a "don't copy my answers" expression. "Whoa it's Jon! Like, Jon from 2005 Jon, with the "super goat" goatee deal on his chin, ha" I thought, totally surprised and kind of confused. He didn't know who I was. But I knew who he was, or I knew who he was going to be. I was in the present but he was in the past. I'm not sure why were were taking an algebra test. Very strange. This was the dream I had last night.