Poe's Law
Poe's Law is a staple in just about every religion/philosophy forum I've ever visited, especially when a new poster comes along.
It's easy to come across as suspiciously Poe-like on the Internet. Double credit to Colbert for pulling it off on TV.
Stephen Colbert is a good example. Seen a few people not realize he's a satirist right away.
and it does not apply to liberal ideas, does it? Remember PETA sent this thing to catch flies when Obama killed a fly on air with his bare hand? I'd say it's joke, but it's on their website: http://blog.peta.org/archives/2009/06/obama_and_the_f.php
americaspeakingout.com is filled with examples of this law in action.
My favorite example: http://www.youtube.com/watch?v=JvVAV09-dQ8
This instantly reminded me of Pastafarianism: http://www.venganza.org/
God says... exorbitant I_quit humuongous astrophysics