A child born of unwed parents.

''Whereas the alternative kind is a...what?...Indiference''''''Child?'' All too often it is.

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Sex is hereditary.  If your parents never had it, chances are you won't either.

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Also used to refer to two systems/ideas merged together.

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Rumour has it that the AppleLisa was named such after SteveJobs' LoveChild -- MatthewTheobalds