someone who is absolutley repulsive to the point where you cannot even look into thier eyes
there is nothing good about them. they look/walk/talk/dress/smell funny, wierd, disgusting, and downright ugly.
these ppl have no reason to roam the earth like they do; they are the reason for global warming and everything that is going on.
there are many variations of this word like:
CRUSY ASS BITCH
yo, look at the crustatious man sitting there.
this dude is crusty as hell
OMG look at the mob of crustations taking over ccm!
what is that smell? oh its the crustivity that is going on with those nerds.