Just in case you haven't heard: America has shut down. Which has naturally prompted many reactions - chief among them: anger, political name-calling and Twitter jokes.

And while we'll leave the rounding-up of anger and political name-calling to other sections of The Huffington Post, were here in the Comedy section have of course been wrangling the latter. Here are just some of the funniest tweets about the debacle so far...

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(Update: We'll continue adding to the slideshow as the US government continues to be shut down)