A bag of chips (thick cut potato fries) that contains and arbitrary number of chips more than a regular bag of chips. The amount of extra chips is at the discretion and generally based on the mood of the person serving as there is no standard measure for a large chip.
Very good (contrary to the dictionary definitions of "full of or involving woe" and "lamentably bad or serious"). Also used as an adverb before adjectives (but not as "woefully") to mean "very".