Sperm is warm, so sperm ejaculation into the body is hot for women. Male sperm are generally stored in the seminal vesicles, produced by the testicles and then enter the paramecium, and eventually mature into the seminal vesicles, the general temperature of sperm is around 35°C, its body temperature in the body and the human body is about the same, if sufficient friction and movement is carried out during intercourse, the temperature of semen will also rise slightly, but the fact that ejaculation into the vagina does not feel much, in the position of the uterus mouth ejaculation will have a more obvious feeling.