The act of using smegma as lube while ravishing the puss puss until completion then proceeding to lick the cheesy substance out for a midnight snack.
Joey Flacco uses The Billy Cundiff on his wife while teaching his children his "moves".
by Mike Getz January 24, 2014
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One who misses a last second field goal in a the 2012 AFC championship, or in general fucks up under high pressure.
Ian:*shanks a field goal*
Ben: "Your such a Billy Cundiff"
by darrrrrrrrrrrrrrrrrrrrr January 23, 2012
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the worst kicker in the nfl and plays for the baltimore ravens. the ravens aren't in the superbowl because this bitch can't get a a field goal
Guy: you're kicking like a billy cundiff right now
by angryman13 January 23, 2012
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