A spooge-filled condom, usually haphazardly tossed upon the floor.
Hey did you remember to uncuff the clow-GOD DAMN IT I'VE STEPPED ON A CUMSLUG.
by ZeeMox August 9, 2010
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The residue dripping out after having anal sex and letting your partner ejaculate into your rectal passage
Max: Mmmmm, I've got some drippage! Must be a cumslug!
by Team dbag August 15, 2008
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can be used as both a positive or negative phrase...
Positive: 'Wow...check out that piece of ass, shes a real cumslug'
Negative: 'I can't believe you shagged that greasey minger you cumslug!!!'
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