<unk>  is an occurrence during sexual intercourse when the muscles in the vagina clamp down on the<unk>  much more firmly than usual, making it impossible for the<unk>  to be withdrawn from the vagina. According to a 1979 article in the British Medical Journal, this condition was unknown in the twentieth century, but a subsequent letter to the same journal reported an apparent case of<unk>  in 1947.<unk>  should not be confused with vaginismus, though a relation between the supposed event of<unk>  and the occurrence of vaginismus is assumed in the existing descriptions.
Penis captivus
Palatal obturator
Pinguecula
Periorbita
Torus mandibularis
Vesical tenesmus
Ayer's Sarsaparilla
Caput medusae