baby slap Share definition Flag A sexual term defining an instance where one ejaculates into their own hand, and bitch slaps their partner with said hand. ex. “That girl was kinky. I was about to nut and she asked me to baby slap her.” baby slap by omgwtfisthiseven February 21, 2019 0 0 Get merch Get the baby slap mug. Buy Now — $32.95 See more merch