Extreme desire/lust for the male genitalia.

A strong desire to perform oral sex on a male.
Natasha's cocklust made her very good at felatio
by DB January 14, 2005
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A woman's ratio, expressed as a percentage, of cocks sucked and/or fucked to cocks seen.

via Cocklust from the Old German Cockenlust
(1) Man, that girl loves the cock. She has a 93% cocklust ratio.

(2) Jenny must be a frigid pricktease. She's only got a 10% cocklust conversion ratio.
by Timo de Vereaux November 5, 2006
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