>>717472806 (OP)
I was that person once. My brother got Fallout 3 for the first time and I had yet to play it so I'd occasionally watch him but not really pay attention much. Saw him kill raiders and use vats occasionally but had no idea what any of that meant in gameplay terms.
About a week later I came up to some friends at school during break and they were talking about something and when I asked them about it they just said "oh, it's a game YOU haven't played, anon, it's called Fallout and it's....." and I got super defensive and started to claim I had started played Fallout 3 using incredibly inaccurate descriptions of gameplay that I could recall from watching my brother, including miming putting the pipboy in my face (by using both my hands like I was holding a tv screen instead of putting my wrist in my face) and how I was killing Bandits with a Bazooka.
They pretty much just had this face on as I was speaking and just said "yeah, you've never played Fallout" and continued talking about it with each other.
Felt like a retard when I finally got around to playing it a few days later and figured out all I said was wrong.