thumb<unk>  or coitus per<unk>  is sexual penetration of the female<unk> by an object such as a penis or a finger. It is not the same thing as<unk>  sounding, the act of inserting a specialized medical tool into the<unk> as a form of sexual or fetishistic activity. The untrained insertion of foreign bodies into the<unk> carries a significant risk that subsequent medical attention may be required. Documented cases of<unk>  appear to have occurred between heterosexual couples; a survey of the global medical literature available in 1965 reported accounts of thirteen separate cases. By 2014, 26 cases had been documented in the medical literature, many in people with Müllerian dysgenesis who were engaging in<unk>  unknowingly. However, the stretching of the<unk> required by this form of intercourse has also reportedly resulted in a complete and permanent loss of<unk>  sphincter control (urinary incontinence); furthermore such intercourse presents a very high risk of bladder infection to the receptive partner. It can also lead to permanent dilation of the<unk> and incontinence during intercourse. Presenting symptoms of unintentional<unk>  include primary infertility, dyspareunia (pain during intercourse), and incontinence. More serious consequences include evisceration via the<unk> and bladder rupture.
Urethral intercourse
Sexual intercourse
Contraceptive vaginal ring
Electroejaculation
Demulcent
Vaginal seeding
Spray-on condom
Non-consensual condom removal