How does this
snark |snärk| noun an imaginary animal (used to refer to someone or something that is difficult to track down). ORIGIN 1876: nonsense word coined by Lewis Carroll in The Hunting of the Snark.
become this?
snarky |ˈsnärkē| adjective ( snarkier, snarkiest) informal (of a person, words, or a mood) sharply critical; cutting; snide : the kid who makes snarky remarks in class. • cranky; irritable : Bobby’s always a bit snarky before his nap.
Now I have to go read that book and find out what a snark is really like once you find it. Does the snark get angry if found? Is it dangerous when cornered?
Koreanish 
Snarks are ambitious, fond of bathing machines, slow in taking a jest, I could go on and on but you should read the poem, you’ll enjoy it! Or if you prefer it in pictures, here:
http://justtheplaceforasnark.blogspot.com/
Boojums ( another species of snarks) are far less amusing and often fatal!
I used “snarky mo-fo” as a caption for one of the pictures of myself on MySpace. I wasn’t even sure of the word’s meaning– let alone its origin– but it sounded kinda hot.