Foot lovers usually prefer psychological domination or comfortable bondage to pain. In establishments such as leather bars, there are submissive bootblacks, available to polish patron's shoes and boots. Forms of sadism run the gambit from the fairly common carefully controlled play-acting with a willing partner, in which the mild forms of pain that result from such acts as spanking and biting are not actually experienced as painful.
To the very rare assaultive behaviours that may include torture, rape or even murder. Likewise masochism can range from mild versions to extremes. Mild forms may include bondage. Tight lacing excites desire not just because it has a constraining effect but also because it carries the promise of release. The high laced boots of the Victorian grande cocotte were unequivocally sexual. These acts are mainly symbolic enactments done under carefully controlled conditions by a trusted partner. At the other end of the spectrum are genuinely painful activities such as whippings, semi strangulation, being trampled upon and self mutilation
Most sadomasochistic acts in their extreme forms can be physically and psychologically dangerous, the majority of people engaging in these behaviours do so with the understanding of the risks and stay within carefully predetermined limits. In retifistic pornography often the malre is physically damaged by the women's high heel shoe. The high heeled shoe is a symbol of love and also a symbol of aggression.
Most women dominate and most guys submit. HELLO! A lot of women said they love to order their men around in bed like slaves and spank them, smack them, and even penetrate them with a strap-on.
Guys, on the other hand, enjoy submitting to women and being told what to do. I guess most of them are probably tired of performing all the time. Everything I mentioned that the women do, well, the men enjoy having those things done to them. Welcome to the new millennium.
Dominance and submission deals with exchange of power, trust, obedience, role-playing, "slavery" ... one person submitting to the commands of another. Like bondage, it can exist as a separate phenomenon, but it's likely to incorporate the others. Bondage may be used to enhance the feeling of submission. Pain-play (i.e. S&M) may be used to emphasize the position the submissive is in or as punishments for disobedience.
S&M sort of stands for "sadism and masochism", but not quite the same way the psychiatric establishment uses those terms. So it's less confusing to keep the phrase tidily together as "S&M". S&M involves strong sensations. It's associated with pain, in particular, in most people's minds, but in fact pain is only one class of sensations used. Furthermore, some stimuli which would ordinarily be perceived as pain are not perceived as pain by some participants when in an S&M headspace! (Note that I said "some".) While I don't have statistics on this, it's my impression that S&M is the one phenomenon of these most likely to occur without the others. Nonetheless, it is quite common for one's interest in S&M to be in the context of bondage or D&S (the pain makes it so very much clearer that one can't get away because one is tied up, for example) or simply alongside an interest in bondage and/or D&S.
Interestingly, while most "vanilla" (i.e. not-into-BDSM) people do not consider tickling to be a BDSM activity, many BDSM folks do.
Some people like to tie people up, whip people, or give orders. Others like to be tied up, like to be spanked or whipped, or like to obey. Because so many of the words one might use to describe these preferences seem specific to just one aspect of BDSM, push people's buttons, or only fit the ways some people play, folks in the scene use the generic terms "top" and "bottom". (Note that these words have a different meaning in gay male culture, if I'm not mistaken.)
In bondage, a top likes to tie up bottoms. In S/M, a top likes to provide strong stimulation (pain or otherwise) to a bottom. In D&S, a top orders or controls a bottom. A "switch" is someone who enjoys being both a top and a bottom