a disease a girl receives from consuming too much cum.
usually causes her not to realize guys only like her because she's a whore..
Friend 1: "Omg Sherrie is deffinately is suffering from CDS!"
Friend 2: " I know! How does she not know her boyfriends only going out with her for the constant fucking/BJs?"
Friend 1: Oh its such a shame what Cum-Dillusional Syndrome does to people...