What does it mean if a random guy calls you ma’am and you still look like a teen?

it’s not a bad thing i’m just curious, i heard most men call women “ma’am” to be respectfully. but what about the women that genuinely look younger or have baby faces. is it just women in general. cause i thought it was respect towards older women

What does it mean if a random guy calls you ma’am and you still look like a teen?
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