Cum-Cuum Share definition Flag A Cum-Cuum is a vacuum that sucks out the cum from a girls vagina after she has sexual relations with a man. Last night I had to use the Cum-Cuum after robert came 20 gallons inside of me! Cum-Cuum by cumdumpster60288 March 7, 2011 0 0 Get merch Get the Cum-Cuum mug. Buy Now — $32.95 See more merch