To eat or consume greedily.
He snarfed a whole bag of chips in a couple of minutes!
To take something by dubious means, but without the connotations of stealing; to take something without regard to etiquette.
I snarfed a bunch of freebies from the vendor's booth when he wasn't looking.
To expel (fluid or food) through the mouth or nostrils accidentally, usually while attempting to stifle laughter with one's mouth full.
It was so funny, I snarfed my milk onto my keyboard.
To slurp (computing slang sense); to load in entirety; to copy as a whole.
I snarfed the whole database into my program.