How often do you get mistaken for your age? Do most people think that you are younger than you actually are? Any funny stories?

A woman yesterday thought I was 16 and I was dying of laughter. Also, a co worker 9f mine thought I was 18 I just laughed. Lots of people say that I look young but I don't see it? Is that one of the benefits of having a babybaby XD
How often do you get mistaken for your age? Do most people think that you are younger than you actually are? Any funny stories?
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