Cock Guillotine refers to a female who often:

1 - Fucks with guys minds (mind games)
2 - Leads guys on, then does not follow through

A Cock Guillotine will often make you think that she wants to take your cock, but at the last minute, chops your cock off.
Guy1 - Dude, everybody hits on Alana

Guy2 - Not me, she's a cock guillotine, she'll chop my cock right off for her collection

Guy1 - True dat
by Highschoolsucksalmostlots January 14, 2010
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