Niggers.

i define cancer as something that can only sustain itself by expanding and consuming.

example 1: the human race

Mostly an example of the latter.

Alright.

9gag.
Looked down upon for their liberal application and misuse of memes, their general immaturity and output of immature rage comics, and aggravating aggressiveness with which they promote their site, they are a cancer among the internet message boards and image sharing sites. (Or whatever FunnyJunk is)