Cumbung Share definition Flag The act of having one's member used as a cervical dam post-ejaculation to prevent semenal expulsion from the vagina whilst your coital partner searches for a cumpon. 'Have you made a cumpon yet? The news is on in a minute and I can't be used as a cumbung forever.' Cumbung by Poomoj January 5, 2013 0 0 Get merch Get the Cumbung mug. Buy Now — $32.95 See more merch