BDSM didnt it originally just stand for

B-Bondage
D-Domination
S-sadism
M-Masochism

and not Bondage,Domination,Discipline,Sadism,Submission,Ma sochism.

and all the politically correct ssc and rack plus another new term that i cant actually remember,i think that all came later too.

edge play seems to have taken a new twist too,seems all things bdsm are termed edge play these days.

im probably way off mark though *s*