When a female is in the "doggy-style" position and a man (or women) preforms oral sex in a crescent formation starting at the clitoris and ending up at the asshole. Brings extreme pleasure and in special cases squirting.
"We did the Casey Crescent all night." "Jessica.....last night was amazing....thank god he knew the Casey Crescent." "I don't wanna fuck I just want a Casey Crescent."
by StreetTeamCC December 28, 2013
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