Monotreme is too extreme!
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Here's another view on the subject:
"So be sweet and kind to mother,
Now and then have a chat.
Buy her candy or some flowers,
Or a brand new hat.
But maybe you had better let it go at that.
Or you may find yourself with a quite complex complex
And you may end up like Oedipus.
I'd rather marry a duck-billed platypus
Than end up like old Oedipus Rex."
-Tom Lehrer