[[Image:Initiation3.jpg|thumb|Illustration by [[Paul-Émile Bécat]] for the novel ''L'Initiation'' by [[Héléna Varley]] (1938).]]
'''Masturbation''' is the act of manually stimulating the [[genitals]] so as to achieve [[sexual]] pleasure, sexual arousal, and/or [[orgasm]]. Most often, masturbation is done by a person to himself or herself, but it is also possible to masturbate another person.
==Masturbation and spanking==
At one time masturbation was commonly regarded as sinful or unhealthy or both. Therefore, [[child]]ren were [[punishment|punished]] when detected in masturbation, not infrequently with a [[spanking]].
Being spanked for engaging in masturbation is a typical [[plot]] of a number of [[Spanking story|spanking stories]].
In some [[BDSM]] [[relationship]]s, one partner (most often the [[submissive]] partner) may be forbidden from masturbating, or from doing so in the absence of the other partner, or from doing so without permission. Violations of such agreements may be reasons for spankings or other punishments.
[[Spankophile]]s also often enjoy masturbating while (or after) reading spanking stories, viewing [[spanking art]], or watching [[spanking video]]s, if they find such media sexually arousing.
== Colloquialism ==
(Male) masturbation is colloquially called ''spanking one's monkey''.