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The act by which one swallows the semen of their partner.
Dan and I have been going steady for over a month now; I'm ready for some cumsumption.

Rasheeda sucks me off all the time, but never swallows. If we don't have cumsumption soon enough, we're done.
by cljpa July 10, 2008
The act of swallowing semen.
"Alice was quite disturbed at the flavor of her boyfriends semen during her first experience with cumsumption."
by GraceeFacee February 06, 2010