1 definition by Dr Phanes

A Cuckold who enjoys watching his significant other cheating on him or her, while the significant other does not know the cuckold in fact knows.

A CuckNinja receives sexual gratification from the act of being cucked, and from a voyeuristic view of their significant other, without them knowing.
Marcus is a CuckNinja
by Dr Phanes December 7, 2018
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