Someone who, although capable of being one, is totally not a jerk, and is therefore well within their rights to "be themselves" in social situations.
It has been said that a 'kerj' is akin to being a cross between a Ninja and a Viking and hence all kinds of heaps of awesome.
That guys natural persona is totally assertive, pleasant and unabrassive ... he might even be a kerj. Plus you can totally see his braided beard beneath the ninja mask.
A skinny human of homosexual orientation with large knees.
Look at his knees and how he is dressed, what a kerj.