If you've ever corrected someone about their use of a word

[yesthattom]

(especially ME on my LJ or blog), then please view this lecture about dictionaries by a real authority:

(Especially around 3 minutes in)

By the way... I’ve never laughed so hard during a lecture about dictioniaries.

(Thanks, Pop!Cast)

Update: Put the video behind a cut because for some reason it starts playing when viewed, not after clicking "play"