Going off on a tangent, my father used to cut a Mars bar into seven pieces and eat one piece each day. There are people who would do such a weird thing as to stop after a 'pop'.
As some-one who hates pringles - I can "just" about manage 1. The lid comes in handy. If I buy a bag of hand cooked (really :D) crisps they just go and I'm left with an empty bag. But Pringles last months. Horrible things!!