BSTFUAGMMAS Share definition Flag It's what you tell your woman to do when she's speaking. "Bitch, shut the fuck up and go make me a sandwish." Her: "Hey, sweetie... Did I tell you about..." <interruption> Him: "BSTFUAGMMAS" BSTFUAGMMAS by Le Noir October 26, 2006 0 0 Get merch Get the BSTFUAGMMAS mug. Buy Now — $32.95 See more merch