Your Mother's Cavernous Vagina Share definition Flag The long tunnel into the light that you call a vagina. See also, Hot Topic. And pink sock. Dude, I went into your mother's cavernous vagina the other day and found these awesome pants! Your Mother's Cavernous Vagina by Titty sprinkles. June 24, 2009 0 0 Get merch Get the Your Mother's Cavernous Vagina mug. Buy Now — $32.95 See more merch