vagstag Share definition Flag 1. A woman who has not had sexual intercourse for a long period of time, in essence her vagina has become stagnant. Hey dude look at Veronica, she just got back from an all-girls school she must be super vagstag. vagstag by Hero of the Kingdom December 23, 2010 0 0 Get merch Get the vagstag mug. Buy Now — $32.95 See more merch