Noun. 1. The person who causes someone to become cuckold through the act of having sex with his wife. 2. A wife that cheats on her husband. See also "Mothercucker" (a man who sleeps with a married woman who has given birth to children.)
Spoonerism of the insult Cock Sucker. It is often used to veil the insult and make it appear less offensive or even to make it go undetected. Can also be written as Sock Cooker.