One of my families just had twin girls ... named

Sigma
Freda

I gathered the Sigmund Freud reference, but to keep from laughing every time I saw them I renamed them Fern and Flora.

Why do the twins always have to be of both gender? Has anyone had a set of twin with one girl and one boy? Or will they always be of the same gender?
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Work like you don't need the money, love like you've never been hurt, dance like noone is watching