Many of us think of our feet as just being appendages of our bodies that take us from one place to the next. That is true for a great many of us. For people who worship the feet, these parts of our bodies can become scared. The practice of foot worship goes far back into our past when a person would lower their entire body on the ground so as to pay homage to a person of higher stature.
In this context the phrase kiss the ground that you walk on literally means that. Here a subordinate person will show their adoration of the higher ranked person by kissing the ground that they walked on. They show they place a high importance on foot worship by acknowledging that even the feet of such a high individual is far superior to them.
In the olden days slaves were made not only to prostrate themselves before their conquerors but they were forced to lick and kiss the parts of the floor that the superior race had walked on. This method of foot worship showed they understood their status.
Foot worship can also be associated with foot fetish. Here items of the feet like socks, shoes, toenail rings and others become objects of scared interest. These items cause the individual to venerate and worship the objects. The objects in this case will take the place of an actual persons presence and the foot worship can take place at anytime that it is desired.
There are other ways of foot worship. These are of an erotic nature as they stimulate sexual desires. In this type of foot worship the foot of a female or a male is kissed and the toes are sucked upon. Also burying ones head in the soles of another person seems to indicate the subservient nature of that person and the superiority of the other.
Supposedly lowering the entire body and showing adulation to the feet of another person who is of a higher rank by foot worship is a way of saying that one person is unworthy of being in the presence of the other and their worship of the feet acknowledge this. Individuals who perform this type of foot worship will also allow themselves to be walked on, stomped upon and they will even let other people of higher ranks trample them without any protest.
I am sure that there are people who think this sort of behavior is either weird or erotic. I personally would rather perform foot worship by massaging my feet with soothing creams and lotions. Pamper them by soaking them in a bath of Epsom salts. Finally I would just relax my feet by keeping up on the sofa. This would be my version of foot worship.