Nerd Osmosis
When a person becomes aware of an aspect of nerd culture by simply interacting with nerd communities.
"This Warhammer 40K thing is pretty crazy, how did you hear about it?"
"I don't know. I play a lot of video games. I guess I picked it up through nerd osmosis"
"I don't know. I play a lot of video games. I guess I picked it up through nerd osmosis"
Base Line Nerd Osmosis
The inescapable general baseline knowledge of fandoms even if you are not technically a part of the fandom, that you gained from being a nerd and talking to other nerds.
Person 1: How did you know so much about Doctor Who?
Person 2: Oh that, I got it from Base Line Nerd Osmosis with my sister.
Person 2: Oh that, I got it from Base Line Nerd Osmosis with my sister.