Today is my anniversary. I got my (fellow techie) husband and I an edible arrangement delivery with a note that said “Happy 19th anniversary in hex!”
He messages me at work: “We got an anniversary gift that wasn’t signed, but there’s a slight math error in it”
Me, indignantly: “I did not make a math error, 19 in hex is 25 in dec!”
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Dear reader, it turns out that I got married 24 years ago, not 25.
Off-by-one errors, man.