Top Definition
a girl member of the cripz who is protected by all of them and its their "main girl"
"we had to take care of a guy who wanted to start beef because we didnt let him mess with our blue gem"
by dat girl pookie March 17, 2006
1 more definition
A large erect penis that turns blue then cums on a girl.
Dude I hade a blue gem and cummed on that girl.
by Fan Extwo April 26, 2006

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