A term that is used for the bulge above a mans penis. It is where the gut meets the penis and is somewhat undefined and gross. It is the male version of a "gunt".
Wow, Ray has quite a sweaty geenis on him, doesn't he?
It is the universal word used to poke fun at one another. May be used as a negative putdown or used as a light joke.
Hah! Jeremy just tripped, what a geenis!
I hate Fred! Hes just a little geenis!