"Did you see those people move away from me in the elevator after all those other people got off? I couldn't tell if I had bad breath or if it was just elevator osmosis."
"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"
Person 1: Bruh, how you lifting so much today? Person 2: Saturated Anabolic Osmosis Person 1: What is that? Person 2: Getting railedin the ass by larger men and stealing their test.
The act of checking your mail, facebook and twitter accounts, checking out the new additions to lolcats, failblog, roflrazzi and urban dictionary, checking nhl and ufc highlights, etc, all while your teacher is lecturing you, hoping that some of the talk that is washing over you will stick in your head.