Can anybody explain this phrase kinda?

Who could understand this?

"You're all that and a bag of chips."

Who wants to be compared to a bag of thin sliced, baked, salty snack food?
Update: Thanks so far. BTW I never do TD's. Just sayin.
Update 2: Um Pawpa, I think I wanna laugh at that but I'm wonderin if that was a compliment or not? Would that be like a really big bag they charge about $1 a chip inside for, given that Potatoes are like "Dirt Cheap" No pun intended.
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