I'm down, cow! Share definition Flag A phrase used to describe someone that wants to engage in sex with cattle. Person 1: If you had to have sex with an animal, which one would it be?Person 2: I'm down, cow! I'm down, cow! by Braveskid July 27, 2011 0 0 Get merch Get the I'm down, cow! mug. Buy Now — $32.95 See more merch