snarf
Pronunciation: /snärf
verb
[with object] • informal , chiefly North American
Eat or drink quickly or greedily: they snarfed up frozen yogurt
Origin
1950s: perhaps imitative.
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To snarf up the chips is greedy behavior at a party with more people than bowls of snacks. Such behavior is just as disreputable as double dipping into the salsa.
[My own experience has the term/spelling as "scarf down". An interesting discussion of this version is found at Word Reference Forum with a connection back to "scoff". Then from Thesaurus.com there are 46 synonyms, none of which is snarf. The Urban Dictionary has and entry for "scarf down".]
Image: http://www.flickr.com/photos/8495857@N04/4475967205/in/photolist-7Pwv7n