NSA sues t-shirt maker to stop his parody of government agency

Is the Obama administration's defense is people can't tell that this t-shirt is a parody?  If "Peeping while you're sleeping" and "The only part of the government that actually listens" strike people as serious descriptions of what the agency does, possibly the Obama administration has only itself to blame.

So let's do a test.  Here are the two emblems.  Can you guess which is the real one and which is the parody?  If the Obama administration lawsuit is justified, you should have a hard time figuring out which is which.  Click on pictures to make them larger.