noun: chewing gum that has a juicy center and squirts its juices into the mouth(s) of those who partake of it.
After our extended french kissing and feeling each off, Tammy knew I was getting ready to go down and suck her breasts when I would bring out a piece of cumgum. We would put in between our teeth gingerly, and then join our mouths. Then we would crunch the cumgum. Occasionally, I would also apply some of the cumgum to her breasts, clit, and little man in the boat, but I always used the spearmint flavor because the cinnamon was a bit hot, almost to the point of being caustic.