Sex Sex was the action by which two ( or sometimes more ) individuals engaged in what was frequently regarded culturally as " intimate contact " . Often , this was the means by which they procreated their species . Sex was distinct from sexuality , the expression of sex and sexual desire . However , as sex was generally associated with positive emotional and physical responses — except when one or more parties did not consent to it , as during rape — sex could also be practised for recreational , and not strictly procreational , ends . Sexual stimulation without a partner was masturbation . Indeed , sex could be practised between two or more individuals of the same sex , which rarely had any procreative implications at all . Precise definition on what specific actions constituted sex varied by species and culture . By the 21st century , humans did not need to have sex to reproduce — the males donated sperm and it was injected into the females by syringe . ( TV : " Out of Time " ) Carys Fletcher worked as a temporary secretary at such a clinic . ( TV : " Day One " ) Virginity was the state of not ever having had sex . Some individuals such as Roz Forrester decided in their youth that sex didn ' t offer anything that Martian ale didn ' t . ( PROSE : " The Also People " ) Sex was also a related term to " gender " . ( PROSE : " Human Nature " , " Something in the Water " ) Species . According to the Eleventh Doctor , shark s , bird s , bee s , and even educated flea s had sex . ( TV : " Hide " ) When a gaseous species that fed off orgasm ic energies was freed from a meteorite , it then proceeded to have sex with almost everyone it met , reducing them to ashes at the climax . ( TV : " Day One " ) Bernice Summerfield once accidentally had sex with a Citdbtbed by shaking hands . ( PROSE : " Walking to Babylon " ) Whilst stuck in deep space in the 1980s Jason Kane had sex with several aliens , he eventually turned these experiences into several works of xenopornography , including " Nights of the Perfumed Tentacle " . ( PROSE : " Death and Diplomacy " , " Beige Planet Mars " ) River Song implied that she had sex with an Auton once , telling the Eleventh Doctor , Amy Pond , and an auton Rory Williams that she once dated a Nestene duplicate with swappable heads . She said that it kept " things fresh . " ( TV : " The Big Bang " ) Several species have disguised themselves as human and then engaged in sex with other humans whilst disguised such as the Zygon Kritakh who had sex with Lauren Anderson , the Arcateen Mary with Toshiko Sato , and a member of the Slitheen family disguised as Oliver Charles who , around early 2006 , enjoyed a number of sexual encounters with Oliver ' s wife , mistress and a young farmer . ( HOMEVID : " " , TV : " Greeks Bearing Gifts " , " Aliens of London " ) Time Lords . By most accounts , Time Lords were implied capable of sexual procreation . The Master , for instance , claimed to have a father , ( TV : " The End of Time " ) as did the Doctor . ( TV : " Doctor Who " , " The Fires of Pompeii " ) In several accounts , the Doctor explicitly referred to himself as having been a father himself prior to his tenth incarnation , ( TV : " Fear Her " , " The Doctor ' s Daughter " , " Listen " ) and was identified as the grandfather of Susan Foreman by Susan , ( TV : " An Unearthly Child " , " The Escape " ) Barbara Wright , ( TV : " An Unearthly Child " , " Hidden Danger " ) Ian Chesterton , ( TV : " The Ambush " , " Kidnap " ) Ping - Cho ( TV : " The Wall of Lies " ) and the First Doctor . ( TV : " The Brink of Disaster " ) Clara Oswald also referred to the Doctor ' s missing " children and grandchildren " , ( TV : " Death in Heaven " ) while the First Doctor ( TV : " The Rescue " , " Marco Polo " , " The Sensorites " , " Flashpoint " ) and the First Elder ( TV : " Hidden Danger " ) mentioned Susan as the Doctor ' s grandchild . In his eleventh incarnation , the Doctor recalled coming to the Rings of Akhaten " a long time ago with my granddaughter " . ( TV : " The Rings of Akhaten " ) Susan , too , had at least one child — whom she identified as the Doctor ' s great - grandson — by the human David Campbell . ( AUDIO : " An Earthly Child " , " et al " ) The Tenth Doctor also described the possibility of genetically collateral relationships when he told Martha Jones he didn ' t have a brother " any more " . ( TV : " Smith and Jones " ) The Ninth Doctor once seemed distinctly perturbed when Rose Tyler implied he didn ' t " dance " — a metaphor for sex that had arisen between the two . ( TV : " The Doctor Dances " ) However , another account suggested that sex had ceased to have a reproductive function on Gallifrey long before the Doctor ' s time . According to this school of thought , the " Pythia ' s Curse " had made Gallifreyans effectively sterile . Reproduction was carried out by the carefully controlled use of Loom s , which produced new Time Lords as fully - formed adults . No direct genetic relationships were therefore possible . Time Lords arising from the same House — for each House had only one Loom — were considered " cousins " . ( PROSE : " Lungbarrow " ) The Doctor . Though rare , there were occasional hints that the Doctor did indeed have sex . Benny Summerfield and the Doctor might have had sex soon after he regenerated into his eighth body . ( PROSE : " The Dying Days " ) Summerfield seemed to confirm the incident when they met again at a later date . ( AUDIO : " Benny ' s Story " ) " Dancing " was a euphemism for sex used by the Ninth Doctor and Rose Tyler . The Doctor said he had " danced " before and raised the question of who Jack would like to " dance " with : himself or Rose . ( TV : " The Doctor Dances " ) The Tenth Doctor apparently had something of an eye for royal women , as he later had a brief marriage with Elizabeth I . After promising to be " right back " but fleeing her , ( TV : " The Day of the Doctor " ) he stopped just short of telling Ood Sigma that her nickname , " the Virgin Queen " , was no longer accurate . ( TV : " The End of Time " ) Just after accidentally proposing to her , the Doctor quipped , " The Virgin Queen ? So much for history . " ( TV : " The Day of the Doctor " ) The Doctor ' s sexual involvement with Elizabeth I was later hinted at by future Queen Liz 10 ( TV : " The Beast Below " ) and by the Dream Lord . ( TV : " Amy ' s Choice " ) Amy Pond , following a near - death experience with the Weeping Angel s , attempted to seduce the Doctor ' s eleventh incarnation . Though he refused , he implied in answer to her question that he hadn ' t had sex in " a while " . ( TV : " Flesh and Stone " ) River Song intimated on several occasions that she and the Eleventh Doctor had ( or will have , from his perspective ) a sexual relationship . ( TV : " The Impossible Astronaut " , " A Good Man Goes to War " ) Their eventual marriage seemed to support this as well ; the Doctor claimed to Dorium Maldovar that River ' s nights spent in prison were between her and himself . ( TV : " The Wedding of River Song " ) TARDISes . Marie ( a Type 103 TARDIS ) was mated with a Type 105 on Simia KK98 by the Time Lords to produce another TARDIS within her , it was taken away from her shortly after its birth . ( PROSE : " Alien Bodies " ) Sex and psychology . Chris Cwej , after meeting with the Dalek s , had sex with Christine Summerfield , just to feel something human again . ( PROSE : " Dead Romance " ) Similarly Gwen Cooper had sex with Owen Harper following a disturbing encounter with cannibals and Torchwood . ( TV : " Countrycide " ) Khiste had sex with Christine Summerfield to prove a point about manipulation . ( PROSE : " Dead Romance " ) Whilst Adam Smith manipulated Toshiko Sato ' s personality to make her bolder and more assertive and then had sex with . ( TV : " Adam " ) James Stevens once had a one night stand with a girl named Natasha , much to the dismay of his wife , also named Natasha , who left him . ( PROSE : " Who Killed Kennedy " ) In 2002 , Fitz Kreiner had sex with Samantha Jones whilst in San Francisco , Sam agreeing wanting to be with someone who wasn ' t attempting to manipulate her . ( PROSE : " Unnatural History " ) Attraction . The inhabitants of Delphon found the surgical removal of limbs to be highly sexually alluring . ( PROSE : " Lucifer Rising " ) Procreation . According to Rhys Williams , several power cut s in the 1970s resulted in baby boom s , as people " took advantage of the dark " . ( TV : " The Gathering " ) Amy Pond and Rory Williams had sex on board the TARDIS on their wedding night , resulting in the conception of Melody Pond . ( TV : " A Good Man Goes to War " ) Inter - species procreation . In India in 1886 , Clemency Eddison fell in love with a Vespiform who had taken the form of a human . She had sex with him and fell pregnant ; the resulting child was Arnold Golightly . ( TV : " The Unicorn and the Wasp " ) In the 26th century , Bernice Summerfield ' s body had sex ( whilst under control of Avril Fenman ) with Adrian Wall . She fell pregnant with a half human - half Killoran baby . ( PROSE : " The Squire ' s Crystal " ) Chris Cwej had sex with Ishtar Hutchings whilst on Earth in 2010 ; following this encounter , she became pregnant , eventually giving birth to Jasmine Surprise Cwej - Hutchings . Jasmine went on to have sex with Ricky McIlveen , they produced a child , an Eternal : Time . ( PROSE : " Happy Endings " , " Warchild " ) Eve , whose species were killed during the Last Great Time War , fell in love with a human named Samuel Lloyd , and they flew away together in her Ship . Their son , Adam , looked human but had the power to manipulate timelines like his mother ' s race . In 2059 , he appeared to Rani Chandra as a teenager and restored her timeline . ( TV : " The Mad Woman in the Attic " ) A descendant of the human Susie Fontana Brooke fell in love with a Tandonian prince and together they created a whole new species . ( TV : " The Waters of Mars " ) Other contexts . Many Time Lord s dream ed of being a different sex ( gender ) . ( PROSE : " Human Nature " ) Iris Wildthyme confided to Sam and the Eighth Doctor that regeneration was treated on Gallifrey the same way that sex was treated on Earth . ( PROSE : " The Scarlet Empress " ) The term " sexually pair bonded " was used to describe a two beings in a sexual relationship in the 24th century . ( PROSE : " Shakedown " ) The term " sexy " was used by an individual to describe another who they thought was sexually attractive . In his eleventh incarnation , the Doctor called his TARDIS sexy . ( TV : " The Doctor ' s Wife " ) The Doctor referred to the Saturnyn s as " sexy fish vampire s " . ( TV : " A Good Man Goes to War " ) When Plark told his subordinate to make their simulation of Joseph Serf smile at Sarah Jane Smith , the Skullion made him give a " sexy smile " , only to be told by Plark to give him a " thoughtful smile , not sexy smile " . ( TV : " The Man Who Never Was " )