During a rape murder, especially with extreme fright, and garroting, the vaginal muscles may lock tightly around the males penis and may not release for a while. In addition, the opening may become tight as to prevent forcible entry without a dildo. This condition is known aa "penis captivis". To avoid this garroting should theoretically begin after the male penis enters the vagina. This tightening takes place sometimes during the "death throes". Eventually, after death, complete relaxation of the muscles will commence.
