68
An oral sex position, in which the giver is on the bottom, and the receiver is on top.
69
A popular group of sex positions, known as a Sixty Nine, in which the object is for mutual oral stimulation.
sado masochism
The sexual pleasure derived from either the inflicting of extreme pain, or the receiving of extreme pain, or both.
safe sex
Having sexual relations where the risk of infection and/or transmission of disease is dramatically reduced by various procedures or actions.
safeword
Word or series of words or signal used to advise the dominant of the needs of the bottom, as in stop.
salirophilia
A sexual fetish, where one gets an erotic delight in soiling or dishevelling the object of their desire. This usually means the apparel or appearance of the person they are attracted to.
savage fold
The physical restraint of a person, in a sitting position, immobilizing them totally.
scarfing
The term used for when one attempts strangulation, for sexual pleasure, while using a scarf.
scat
Sexual play involving human feces, including ingestion as well as decorative.
score
Back room talk about having sex, about getting sex.
scourging
A specialized implement, used in flagellation, that is used to inflict damage, to draw blood. Most notably used in devices that have multiple tendrils, such as the Cat o Nine Tails, but with knotted ends.
seduction
The deliberate act, of enticing another person into some behavior, normally sexual in nature, that they wouldn't do, or be allowed to do.
seinen manga
Japanese comic book genre, generally geared towards young men between eighteen and thirty, though older men are also attracted to this form of Yaoi.
self sucking
Self sucking refers to a man sucking his own penis. This is also referred to as auto fellatio and requires a limber back so one can bend over far enough to reach the penis with one's mouth.
semen
The liquid that is discharged from the penis, during a sexual arousal and subsequent orgasm.
sensation play
The control of senses by one over another, in a BDSM role playing scenario.
seroconversion
Term defining when a person originally tests negative for an infection, then test positive shortly afterwards.
serodiscordant
Term used to describe two people, where one tests positive for HIV, the other tests Negative, and they are sexually active with each other.
serology
The study of antibodies found within blood serum, to help identify disease, infections, and viruses.
serosorting
The practice of seeking men who are of the same status, as they are, in regards to HIV infection.
serostatus
The determined status of someone who has tested for Serosorting.
serotype
A grouping of micro organism, in the serum, from their cell structure, composition.
servitude
The act of performing services for the Dominant, in a power exchange relationship.
sessions
The allotted time when the BDSM routines take place.
sex
Sex between two males.
sex clubs
Public places where a person can engage in casual sexual acts, such as in a backroom of a bar, in private rooms at a bathhouse.
sex symbol
A well noted celebrity, actor, actress, or public figure, that exudes a particular charm, or attraction from those around them.
sex toys
Sex toys refer to a variety of products made to enhance sexual pleasure.
sexual addiction
Where one becomes obsessed with having sex, to the detriment of their normal daily life, including the need for multiple partners, to satisfy their craving for sexual contact.
sexual dysfunction
Difficulty for a person to enjoy sex, during any stages of the sexual act.