n. (cog-sex) The unhappy, mostly disgusting, simply distasteful aspect of sex. After engaging in COG Sex, one will feel the onset of a feeling of both anger and disgust. Each person who partakes in COG Sex looks at the others around him or her uncomfortably and awkwardly. One decides, and is determined to, never again partake in COG Sex, but sadly finds themselves in the same situation once again the next day. Also, a feeling of nausea is not uncommon. Sometimes vomiting or diarrhea may occur.