1 definition by The gentleman_4.50

V. or N.

During the course of fellatio, the forceful but willing removal of one's phallic tip, usually running simultaneously with male climax. The action is initiated through an upward thrust to fellater's lower jaw, causing the abrupt closure of the mandible, severing the penile head from the base.
The guillotine is a once in a lifetime experience, i.e. "I'm saving my guillotine for my wedding night...."
by The gentleman_4.50 May 08, 2008

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