What I think is especially interesting (as a teacher, myself) is that there are memes that live long hearty lives solely ensconced in the confines of the web. It's interesting to see the faces in a room - and there are never more than a few unless it's a group aged largely under 25, and those people "get" such things - light up when something that was funny as a meme is brought up in class. I mean, the number of people even now in a college classroom who understand when a speaker says "All Your Base Are Belong To Us" tends to be small. It illustrates, I think, that the assumption that all young people are completely plugged in (there were a couple of videos of a 60 Minutes show on "Millennials" that went into detail -- they're on YouTube) isn't as true as it seems. "These young kids and their newfangled stuff" doesn't always include the group knowledge we, as older people, assume it does.