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1.
Female genitalia
MianDog: Get your Ghenki out
Alex: What's a ghenki?
MianDog: It's your fanny, now get it out!
by MavePorridge September 14, 2009
 
2.
Ghenki is the term given to a males man-piece whilst attending the races.
One might say 'oi get your Ghenki out' to a compardre when waiting for the horses to cross the line.

One famous example of the term was used my the infamous Porridgeotamus (a man beast borne of nature) when asking for garnish on his aperitif.
by Doggy Dog is No.1 September 11, 2009