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An early form of lesser-evolved human being known for its use of primitive tools such as plain-text emails.
Jack: "I just got an email from John. Can you believe that Homo Plaintextus sent it in plain text?"
Jill: "Are you kidding? And he sent it from Hotmail? Obviously a very early example of the species."
by El Pulpo Guapo August 17, 2015
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