Tommy: You know, mashed potatoes are a novelty in Asia. It's because they can't be eaten with chopsticks. Annie: You could if they were really chunky. Tommy: You could, but you wouldn't have a 100% success rate and anything that's not a 100% success rate in Asia is not acceptable.
I suppose the chunky mashed potatoes themselves are an example of a non-100% success rate, further compounding the matter.