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A large variety of other euphemisms and dysphemisms exist which describe masturbation.Reading or viewing pornography, sexual fantasies, or other erotic stimuli may lead to a desire for sexual release such as by masturbation.Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra (the tube through which urine and, in men, semen, flows), Some people masturbate by using machines that simulate intercourse.It may also involve touching, rubbing, or pinching the nipples or other erogenous zones while masturbating.Both sexes sometimes apply lubricating substances to intensify sensation.

Animal masturbation has been observed in many species, both in the wild and in captivity.The English word masturbation was introduced in the 18th century, based on the Latin verb masturbari, alongside the more technical and slightly earlier onanism. Suggested derivations include an unattested word for penis, *mazdo, cognate with Greek mézea μέζεα, "genitals", or alternatively a corruption of an unattested *manusturpare ("to defile with the hand"), by association with turbare "to disturb".For males who have not been circumcised, stimulation of the penis typically comes from the "pumping" of the foreskin, whereby the foreskin is held and slid up and down over the glans, which, depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion.The outer foreskin glides smoothly over the inner foreskin.The glans itself may widen and lengthen as the stimulation continues, becoming slightly darker in colour, while the gliding action of the foreskin reduces friction.This technique may also be used by some circumcised men who have sufficient excess skin remaining from their circumcision.Male masturbation techniques may differ between males who have been circumcised and those who have not.Some techniques which may work for one individual can be difficult or uncomfortable for another.