Dunkarooing Share definition Flag When you lubricate one's anus and quickly insert or "dunk" your testicles into his/her rectum. Ex. "Oh, I'm gonna be Dunkarooing you so much tonight." Dunkarooing by Biggycheezman December 11, 2019 0 0 Get merch Get the Dunkarooing mug. Buy Now — $32.95 See more merch