1). A female who has been known to either directly or indirectly (via transfer) apply glitter to her biscuit. Most commonly spotted in club environments, however may be seen in general public. Commonly abbreviated as simply "GB" 2). An attractive woman you wish to bone however have no intention of engaging in follow-up activities nor further communication with.
"Wow, I want to bone that glitterbiscuit" "Look at that GB"