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Mistress Varla
shelikestosuckit: “When a man has achieved a sufficient level of stimulation, ejaculation begins. At that point, under the control of the sympathetic nervous system, semen containing sperm is produced (emission).[3] The semen is ejected through the urethra with rhythmic contractions.[4] These rhythmic contractions are part of the male orgasm. They... - http://mistressvarla.tumblr.com/post...
shelikestosuckit:
  
“When a man has achieved a sufficient level of stimulation, ejaculation begins. At that point, under the control of the sympathetic nervous system, semen containing sperm is produced (emission).[3] The semen is ejected through the urethra with rhythmic contractions.[4] These rhythmic contractions are part of the male orgasm. They are generated by the bulbospongiosus muscle under the control of a spinal reflex at the level of the spinal nerves S2-4 via the pudendal nerve.”