A girl that you keep secretly hidden in your closet to be brought out only for sexual activities. You feed her slices of bologna under the door to sustain her because that is the only food flat enough to fit.
John: Matt, where's that girl you've been fooling around with?
Matt: Oh, I don't bring her out. She's only my bologna girl.
Matt: Oh, I don't bring her out. She's only my bologna girl.
by Megan Caroline August 10, 2012