Top Definition
Also "QED-MF", "QED, MF." Frequently followed by an exclamation point.

Abbreviation of the Latin phrase, "quod erat demonstrandum, muthafucka," meaning literally, "that which was to be demonstrated, muthafucka." Often declared exultantly at the end of an argument or mathematical proof to indicate that 1) the conclusion has been successfully shown; and 2) the opposing viewpoint have just been thoroughly served and/or pwnt.

Variant of the more common QED.
Bob: God exists, He made the Universe.
Jill: Yeah? So prove it.
Bob: "In the beginning, God created the Heaven and the Earth." It says so right there on page one of the book that God Himself says He wrote! QEDMF. Sorry, atheists.
Jill: ...WTFever, tautology-boy.
by IceLizarrd March 19, 2008

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