Your average person may think if a man desires another guy's dick he must be gay.

However, that's not the case with a penis fetish: that of a straight man desiring another man's penis. As a clinical sexologist, I counsel clients from around the world. Part of each of my sessions is devoted to gathering a client's personal sex history.

The importance of a client's sex history is two-fold: One, it helps me understand them better so as to help them. Two, I gain information on similarities in particular clients' sexual histories. This can pertain to sexual patterns, desires and in some cases, kinks and fetishes.

Compiling sex histories over the years has given me some insight as to why and how sexual fetishes develop.

The sex histories of men that I counsel as well as men I interviewed for other studies presented similarities in how said fetishes developed. Most fetishes developed around the age of puberty when an encounter, object, or incident happened that created arousal.

In most men, the arousal coupled with the onset of puberty created the fetish — and just as a man may have a foot fetish, he can also have a penis fetish.

As described in an article featured on WebMD, Richard Krueger, MD, an associate clinical professor of psychiatry at Columbia University said that "people can 'fetishize' almost anything. There are many websites about lots of fetish interests...anything you could imagine. According to a study, the most common fetishes involve body parts, such as feet, or body features, such as obesity, piercings, or tattoos."

Having a fetish for a penis does not mean that the person must be attracted to the same gender.

In the area of cuckolding, which I define as "a marriage where the husband derives sexual pleasure from watching his wife have sex with a man who has a larger penis," a man can safely play out his penis fetish because it also involves his wife. Thus, the penis fetish becomes acceptable in terms of, she is the one asking him to get the other guy hard by sucking on his dick or giving him a hand job.

Of course, some people will jump to the conclusion that the man in this scenarios is bisexual and in some cases this may be true but in other instances, it may not and he just has a penis fetish.

A bisexual man would be attracted to the man, not just his penis. A man who is heterosexual or sees himself as straight is not attracted to the man and only desires to suck or fondle the other man's penis.

As confusing as this may sound to you, remember: it's just as confusing to the men who have a penis fetish.

Some men have engaged in sexual encounters with other men because they are confused, only to realize that they're not attracted to men — they're attracted to women but also want a woman to force them to interact with another man's penis, i.e. cuckolding.

Sign Up for the YourTango Newsletter Let's make this a regular thing!

Some men may find this whole topic to be ridiculous and unsettling but the reality is that straight men who have a penis fetish beat themselves up over it, feel tremendous shame, and are terribly confused.