This is quite a common example. We are used to the status of Masters and servants, where servers could be extended to slaves because of poor conditions of employment. Conditions could be that food and  accommodation is a condition of employment, but financially they have no liberation. An example of this would be when the storm hit New Orleans and people were criticized for not leaving - how could they? When they live hand to mouth with a weekly welfare payment. This was a common system in feudal times of controlling the peasants if all they worried about was fighting off starvation, an uprising was not high on the list.

This is where you get the White Power / Black Power supremacist to function. For a white slave boy having a white power/nazi skinhead for a Master is the personification of power.

Pay For Sex

There are some people who look forward to the day when they will ever only every to get sex by paying for it. They start off with needing to buy gifts for their 'Masters'. For such a scene don't accept a cheque as that is cancelled the moment they have shot their load.

However these seem to break into two types, one might be the husband is having sex with a man to fill a need then going back to his wife to fit into normality. A tricky choice if you marry a Bisexual by default your marriage can only sustain one side of him or her.

Another type is the person that has more than enough money, might make himself as unattractive as possible and determines your worth by negotiating at what price you will drop your standards. Part of his fun is just fishing to see how much you are worth.

So who do you think the real Master is there?
The guy that pisses on him or the guy that has the cash?

Social Cast

I know of a lawyer that gets a real kick out of going with someone that is substantially below him job wise - eg social worker.  This also comes where you have a lawyer or barrister in court doing his big powerful job but the court cannot see that all his body hair has been shaved off and that he is wearing diapers and a chastity belt.

Playing with Fire

This happens to a minor degree when you want 'a bit of rough' this ranges from having sex from the gardener or the builder you have in at your house (often the frustrated housewife syndrome) to putting yourself at risk for a thrill to cruising army boys in the woods. In a time where there was a lot of homophobia in the army this was balanced against your sexual needs.
So you could find someone in the woods and you had anonymous sex with them - sadly there were also deaths. Where after the 'straight' guy came he had guilt and battered the Queer for defiling him or the risk of being exposed. There is always excitement of the unknown or the thrill of edge play.

Traditional Role Inversion

Well this covers a good few areas to. From babyplay  to Sons topping dads. 
The top son role has the situation where the younger guy is attracted to older guys. Then he just happens to be active. It 'normal' for the older guy to fuck the younger guy.
However some guys really get off on humiliating and degrading people their Dads age.

I knew of one guy (used to live his his Girlfriend) but from his late teens he used to top older guys (to help with his college fees). His main trick was to force the 'dads' to eat all his shit from his ass.
He had the the right persuasive skills to make sure they could take all he could give - this they paid for.  Things might have been different if he did not have a girlfriend (that was ok about this?), and if he was cute and that be played football on Sundays.

This is also part of the role of the 'rent boy' where you pay for his youth, though many rent boys enter that profession as a last resort - like it would not occur to them if they had more money than sense.
It is usual that rent boys run risks of abuse and death in times past. It can also be earning his money the hard way, living from trick to trick, always on the lookout for a quick buck, either from hustling or stealing. This is typical if drug/alcohol dependency is involved.

This is still part of the role of the slave to suffer for his god - we all need a god it seems or to be one. There can be a sense of power and fulfilment when you are encased in your leather and you have someone under you boots, and if that someone should normally be your better, you are even more empowered.

This might come from years of a real parent 'kicking down' his son and the son wanting to turn the tables. It is common that the younger guys that like older dads seek the security of the father image. Where as you would need to be a confident and self sustaining guy to take on the challenge of dominating an older guy. It sometimes happens that the son is very tall and people just respect people taller than you - this is a problem tall slaves have when they are looking for a Master, everyone assumes they are. At a formative stage if everyone treats you like a top, then maybe you are!

His class  are dirty

You can say his has fleas/lice, so you will require him to slave his body, cock/balls ass - as well as chest and armpits.
Get all the flea infested hair off. Even inferring his is dirt by virtue of his class will further put him down. This happens on an inter class basis. Not really possible if you are both socially equal, unless you can create false comparisons between each other

Cross Dressing & Sissification

This is more common in the Dom female sub male arena. But this is also to take on characteristics and virtues of that role. A woman is soft and gentle and is free from the complication of modern life that real men have to deal with. You as a sissy are not capable of dealing with such matters.
So you have the enforced feminization which is part of the emasculation of the male or you have the man taking refuge in this role.

This also happens that people with powerful, stressful job relax by being a slave in the private life, where all responsibility is lifted/taken from them. This articles is not exploring Transgender/Transvestite  needs only in so far as from an SM perspective. That is where you can refer to a slave as a 'dirty little whole' or a 'filth bitch' if he looks and acts like one.

• ageplay - The term ageplay can be used as a standard roleplay term, but generally ageplay is a form of emotional regression. Some enjoy ageplay because they feel a need to express a childlike side, others may feel they are of a psychological age younger than their physical age, and some have dissociative child personalities
• cross-dressing - Cross-dressing is behaviour which runs counter to those norms and therefore can be seen as a type of transgender behaviour.
• Sissify - The House of Sissify was built upon a solid belief of strict behaviour modification, discipline, forced feminization, and most importantly; nurture. All that is required to become the woman of your dreams...
• Sissyboy adverts - this coverys Sissy boys, transvestive/transgenger dogslaves.
• House of Bondage - For two weeks, Nick Broomfield and a documentary crew visit Pandora's Box, an up-scale house of bondage on Manhattan's Fifth Avenue, where clients pay $175 an hour to be subservient to mistresses. Mistresses talk about their craft; a few clients, usually masked, are interviewed as well. Then, the camera watches sessions organized around fetishes: rubber, wrestling, corporal punishment, masochism, and infantilism. Mistress Raven, the owner of Pandora's Box, explains that pain need not be part of the subservient experience: it is, at its root, a transfer of power. After their session has ended, clients talk about how drained, relaxed, relieved, and at peace they are.