a lesbian love interest, ideally girl friend/lover; the female lover of a mad-for-her male who is desirous of her; a pet name for a pet rock.
HEY get your bitchass fingers off her. she's my joy biscuit and don't you know it by now, slit?
hey baby doll. come to me be my joy biscuit, wrap your hand around my heart easy like;
that's not a paper weight on my desk - hey that's my joy biscuit. painted it blue in 4th grade.