I'm looking for an old post from Ask MeFi where the ask was something like "what are your most useful life hacks?" and one of the answers referred to learning that you could tell which way to plug in a lightning cord by looking for the icon on the end of the plug. I have a vague memory that Quora was involved in this person's answer. I don't know if the person who answered specified this tip specifically or if they linked to a Quora site that had this answer. I've searched here and Quora and can't find the thread. All help greatly appreciated.
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AskMe thread on chilling Coke, specifically this answer, makes Lifehacker's list of Top 10 Food and Drink Hacks. Comments contain doubt as to the real identity of Mefi's own asavage.