vagactus Share definition Flag Prickly hairs that grow a few days after you shave your vagina (and sometimes poke through the fabric of your underwear!), leaving your vag feeling like a cactus. Thus, VAGACTUS. "Babe, you're so prickly!" "Then get your hands off of my vagactus!" vagactus by dansw1fe August 3, 2012 0 0 Get merch Get the vagactus mug. Buy Now — $32.95 See more merch