[His grin grows wider then he sighs and shakes his head.]

I assume he figured you'd catch on. And since other people are watching right now.

[He turns fully to face Keith with his back to the screen.] Remember back at the Garrison how when someone messed up in aerial flight maneuvers we'd waggle our aircraft wings?

One of us started it as a funny joke. Others found it amusing and spread it. Now we all do it. That's an example of a meme.