Top Definition
A girl that you flirt with, but don't full on flirt with while you have a girlfriend. This is just in case something takes a wrong turn with your current girlfriend you have another girl to move on to.
Alex: Things with Jade and I are ok, but I don't see it lasting too much longer.

Hassan: It's all good bro, you have an insurance girl right?

Alex: Yeah, Casey.
by Ninenine222 July 11, 2012

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