I was browsing Reddit, and I came across "BDSM contract".?
BDSM is a composite acronym for BD (bondage and discipline), DS (dominance and submission), and SM (sadomasochism). BDSM collectively means any of a wide range of kinky practices, from tying people up to spanking them to doing whatever youre told. A BDSM contract is a (fantasy, not-legally-enforceable) written agreement between two or more people that generally says one person will submit to another, what kinds of things they will submit to (such as always being available for sex or always following certain protocols), what rules govern the relationship, and what the limits and boundaries of the folks involved are.