The intent behind Silva's "message"
During the UFC 122 post-fight conference, silva said Maia had "disrespected" him. When asked "how so?" by a reporter, he didn't go into details, but simply said he wanted to "send a message" to Maia. The first two rounds were jaw-dropping, but the later rounds were comedic at best.
The following is all speculation. I don't know how Maia disrespected him, but I'm speculating that it may have been about Silva's BJJ skills. Perhaps Maia said Silva is not a true BJJ blackbelt -- I don't know. But the more important question was why did Silva simply coast during the latter half of the fight. Pehaps the message that intended to be delivered was that "you can't touch me." Perhaps silva wanted to bust him up, and avoid any more possibility for Maia to even land one punch (Maia inevitably landed some punches, I know -- but that's besides the point). Silva may wanted to hurt him first, and then frustrate Maia by not even giving Maia an oppurtunity of winning.
Now, I tend to dislike assholes and unecessary taunting. But for some reason, I never laughed as hard as I did watching that fight. Whether he was pretending he was getting hurt, or dancing, or playing air guitar, for some reason I found it funny, which is unlike me.