Blueberry Yogurt Share definition Flag 1. Vaginal Secretion. "EW! Callum keeps saying 'vaginal secretion'." "Well, that's cause you're eating blueberry yogurt." Blueberry Yogurt by Illegal_Immigrant January 14, 2009 0 0 Get merch Get the Blueberry Yogurt mug. Buy Now — $32.95 See more merch