boot slave

Boot worship is the extreme adulation of boots in BDSM, usually carried out while the footwear is being worn by the dominant partner.
It is related to foot worship in a derivative way, in that the adulation may really be attributable to the proximity of the boots to their master/mistress. The foot is usually considered one of the "lowest" and least appreciated parts of the body, and it is a kind of humiliation to be kissing and licking someone's foot.
In “boot worship”, the humiliation goes one step further. The submissive willingly worships the dominant partner's boots, and often without even being asked to. This reverence for the footwear that encloses the dominant partner's foot is sometimes an expression of extreme devotion or loyalty, sometimes a concrete admission of inferiority or defeat, and sometimes both.

View More On Wikipedia.org