when you have anal sex with a partner, ejaculate in the ass and then have your partner proceed to "poop" out the sperm.
I met the dirtiest slut ever lastnight, i fucked her in the ass, came all up inside that tight ass, and watched her shit my CUMLOG man goo all over her dog. WTF
by jonnygobbs August 12, 2008
5 Words related to cumlog

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