All my blood was contained in a single vast resevoir just beneath my skin, and my organs just kinda floated around in it. I could tell because I always bled no matter where I was cut.
The expression “raining cats and dogs” was based on an actual incident where cats and dogs fell out of the sky like rain.
Baking soda caused cake batter to increase in volume, and was invented to save money on other ingredients.
Summer school not only started the moment the regular school year ended, it had the exact same hours.
Religious factoids like the location of Antioch and the details of Paul’s excape from an angry mob would be important in my adult life.
All heavy metal was exactly the same…mindless screaming and instruments played way, way too loud.
“The father of our country” was just an informal nickname for the current President of the United States.
Police officers could arrest anyone they wanted for any reason.
Drugs were horrible, horrible things, and if you ever so much as sampled one, you’d completely destroy your life without any chance of recovery. (To put this in perspective, I was on medication for about three years.)
Rap music was a colossal scam made up by no-talent hacks who couldn’t sing. All the attitude and image etc. was just a smokescreen.
“Donkey” was slang for gorilla. Oh, and there was absolutely nothing weird about a game asking me how high I could get. 
I had some karmic connection to Darrell Waltrip on account of having the same first name. Spelling and all! (Oh, and Bill Elliott was the greatest NASCAR driver who ever lived.)
The NFL has a vote every year to decide who plays in the Super Bowl. There certainly wasn’t any “playoffs” involved, because how does a bunch of complete losers like the Patriots make it in '85?
Hank Williams Jr. was some local performer ABC picked up for a new promo.
Star Blazers was an American-produced cartoon that just happened to look a little unusual. (Everyone speaks English, right? And the title and all the captions are in English right?)
The Great Video Game Crash happened in 1985, because that’s when the little game room next to the place my parents shopped went out of business.
The first VCR we ever owned…a top-loading tape player-style box with levers, where you couldn’t rewind or fast forward while playing, and it didn’t have a timer, or even a clock…was the most insanely wicked cool thing ever.