toppin some g's Share definition Flag dumbass, thats all wrong. "toppin some g's" means to "bust a cap", or "shoot some mofos". stop right there, biatch! before i top some g's in yo ass! toppin some g's by cow town August 18, 2004 0 0 Get merch Get the toppin some g's mug. Buy Now — $32.95 See more merch