KneeHaw Share definition Flag The sound one makes while having and also term for great knee pit sex, like a cowboy saying yeehaw but having to do with the knee. Hey Angela it's time for some kneehaw. KneeHaw by Xxjo_mamaxX August 30, 2021 0 0 Get merch Get the KneeHaw mug. Buy Now — $32.95 See more merch