In the olden days, when everyone was still using landline phones, if you wanted to call back the last person you spoke to immediately, you’d dial *69. It was a nifty trick for quickly catching someone whose call you missed, especially since we didn’t have digital contact lists to remember all of our friends’ numbers back then. Of course, we do have contact lists these days, so you rarely have to manually dial a number unless it’s someone you’ve never
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