The word cuckold is an old timey word to describe a man who’s wife is cheating on him. It’s not really used in that same way anymore but this old definition of a cuckold does a fair bit to explain the word in terms of the cuckold fetish.
A person with a cuckold fetish is typically a man who gets aroused by the idea or reality of his significant other sleeping with someone else. Typically in a cuckold sexual relationship the woman is dominant and the man is submissive. There can be a humiliation aspect involved for some men in which they also like to be verbally abused or told that the other man is better in bed than they are. This is not always the case though. The woman, however, sometimes has full control over when and if the cuckold can have sex, in some cases the cuckold is completely celibate while the woman is free to sleep with other partners. It is also not necessary for her partners to be male.
This fetish is most commonly found in men in heterosexual relationships but it isn’t unheard of for women to have this same fetish too. A female cuckold is referred to as a cuckquean, where as the significant other of a cuckold is sometimes called a cuckoldress or hotwife.
There is a certain amount of room in this particular fetish for disfunction. If it comes about in one’s relationship because one’s significant other actually was cheating and the cuckold just let it go because it turned him on, this could lead to problems down the road. This, like all relationship things, requires a ton of good communication. Often people cheat because of a communication breakdown in a relationship, so already this is not the best place from which to start exploring the cuckold fetish.
It should be noted that cuckolding is not the same as swinging or having a threesome, although in some instances the woman will have sex with someone else while the cuckold is in the room. Sometimes the cuckold will do “clean up” duty in which he performs cunnilingus or anilingus on his significant other after she has had sex with another man in order to clean up after him.
Cuckold fetishists are pretty common as far as kinks and fetishes go. It can be a very healthy, fun and exciting way to express your sexuality as a couple and gives men and women an great opportunity to reverse the traditional heterosexual power dynamic.