G-Sign Share definition Flag The intentional showing of a G-string or thong to attract a potential mate. Dude check it out that chick is totally giving me a G-Sign, I'm goin in. G-Sign by ThisGuyIsOneHellOfAGuy December 24, 2007 0 0 Get merch Get the G-Sign mug. Buy Now — $32.95 See more merch
