Just realised that the right thing to do is buy a packet, eat the crisps then sell the almost empty packet on ebay.
Marketed as 'still has the aroma', 'some crumbs left' or 'pretend you have your own secret supply by wandering around with the bag open but filled with some substitute like parsnip crisps'
(, Wed 10 Nov 2021, 12:32, Reply)