15. Children
Plenty to choose from with children. The most used one among the good believable excuses for missing work is probably a call from the school. You can add a bit of a flavor by saying that the kid got into a fight or swear at a teacher (maybe even the principal). Admitting something like that will make your boss from any further inquiries. Sick kids will get you a lot of sympathies and not only your boss will let you go, but probably offer help as well, but we would recommend not using it as a fake excuse to skip work.
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