I think the "dick pics" line actually really works well. If you think about it from the perspective of the average person, a lot of people buy the NSA's statements that they don't care about the communications of most Americans and that PRISM is necessary to maintain security. After all, a lot of people post everything they do on Facebook or Twitter where anyone can see it.
One of the articles I read on this mentioned that even people who support or don't care about the NSA suddenly cared when they realized that the NSA can see the things they don't post on Facebook (nude pics, sexting, etc).
If framing the NSA's data collection programs as "dick pics" makes more people understand, then I'm all for it.