Why ‘Community’ is the only Internet crossover that matters

"Community" creator Dan Harmon likes to get into it on Twitter.

We're talking 3 p.m.-after-school-behind-the-gym into it. What's more, the rocket surgeon of popular culture doesn't need an invitation to throw down.

Take, for example, Harmon's Twitter badness from last November, stemming from a tweet that didn't address @danharmon directly, and only came to his attention via the hashtag #Community:

@ILNY83: I just got done watching the Halloween episode of #Community. It had a lot of laughs, but I'm over the parody episodes. I miss season one.

@danharmon: @ILNY83 I'm over your poop face. Read more...