Not really sure how old I was, it was the early, early 90s.
I was REALLY young when I first saw Terminator. I knew about it because of it's influence on pop culture but I was vaguely familiar with all of it.
I remember asking if my dad had the film about "cops and robots". I thought the basic plot of the film was about two cyborgs fighting to become cops or something (getting confused with T2). So I begged my dad to see a rated R movie. He kept telling me he didn't have it despite the fact that he literally had EVERY film in his entertainment room (all VHS back then).
Well my mom had left to go somewhere one day and my dad called me. He had something behind his back and said, "look what I found". He turned it over and it was The Terminator VHS cover. It wasn't those cardboard/paper box slip covers this thing was like a plastic case that you'd find at the library with the little hole in the back.
Of course, I ____ING LOVED IT. The surgery scene, ____ YOU ASS HOLE, having to close my eyes when Kyle and Sarah poke (didn't do it lol), the endo, all this stuff on an impressionable child. It freaked the hell out of me but I loved every minute of it.
But man, even as a kid I understood how gritty it was. I didn't understand the basic concept of it all like John Connor or the technoir aesthetic but I got the dark vibes of the 80s.