Back when Cha-Cha (one of those SMS-based question answering services) was newish, I texted them asking how I could go about taking down the entire Internet (you know, just to see what they'd say). They told me twice that it was impossible, then the third time when I mentioned targeting the DNS specifically, they just informed me that even if I did succeed, I would surely go to jail.
A disappointing response, I thought.