briniscus Share definition Flag A body part that only 35% of the American population is aware of. Located towards the back of the lower cerebellum. Also rumored to be in the southern region of the human anatomy. "Hey Liam, your briniscus is showing." "No it's not!" briniscus by john23 December 9, 2007 0 0 Get merch Get the briniscus mug. Buy Now — $32.95 See more merch
