When your spouse tells you no to having intercorse after getting diner.
Honey your being a real coffin cock right now.
by gallahad13 November 3, 2017
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Someone who is so rude/disgusting/pigheaded that no one sane could possibly want to have sex with them. Therefore if anyone were to date them they would be "laying their sex life to rest"
Man Jerry thinks women owe it to him to have sex with them. Hes such a cock-coffin.

Or

Alice is racist. She is such a cock-coffin
by Misunderstoodsnowflakes December 8, 2019
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