G-Girl Share definition Flag The term G-Girl is given to a sassy, cool and fun loving woman or girl with an attitude, who's nice to those close to her. Omg, look at Brigitte, she's such a G-Girl. She's only nice to Lilly. G-Girl by SunCu March 2, 2023 0 0 Get merch Get the G-Girl mug. Buy Now — $32.95 See more merch