switch
Someone involved in the BDSM Lifestyle, that takes on both roles, top or bottom.
sword swallower
Someone who enjoys sucking a cock.
swords
Childish term referring to two males fighting each other, while taking a pee.
swordsman
A humorous term denoting a penis.
sympathetic magic
The belief that some object, usually from another species, or such will impart special powers to the holder, or owner of that object.
syphilis
A major sexually transmitted disease, that is on the increase in today's society, that at one time threatened the European Nations with extinction.