Why don't men understand how bra sizes work?

I know several men who claim they are boob menThey have no idea how bra sizes work! For example, a thin lady with large boobs such as Sophia Vergara wears a 32F. Most men would look at that and say 38DD! Truth is although the cups increase (mostly in width) with the band size, the band size Is relative to ones Weight! A 40 inch band is technically meant for a plus sized body, no matter what the cup size is! I hear so many guys talking about 40DDs on a stripper when in fact her actual size should be like a 30H!
Why don't men understand how bra sizes work?
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