<human>: Give me the gist of the text in a nutshell

So I was playing football in 9th grade and hit a dude. No need to explain the story behind the hit, suffice to say he was short so the top of his helmet caught me right in the chin (ok so maybe he hit me a bit too). As I came off the field I knew something was amiss and my head hurt a lot. I ripped my helmet off and when I opened my eyes I was seeing double, except instead of the double vision we're used to seeing. When I looked around me one part of my vision was the normal view the earth being its typical horizontal self, but the other side of that double vision was everything turned perpendicular, so the earth was going on a very unnatural vertical line. I learned later I had experienced a concussion, but I've always wondered what the deal was with my weird vision or if anyone else has ever experienced anything like that. Please let me know.
<bot>: got hit playing football, experienced double vision, but instead of normal double vision one part was normal and the other part of the double vision was vertical.