When you get to a certain age, you shouldn't try to tell people you are younger than you actually are. Instead, tell people you are older, so that they will be like "wow you look great for being ....".
I think it should be: 1-50 = years old, then 51-100 = 50-1 years young, after that 101+ = back to years old because that's amazing that you made it that long.
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