In a crime crime, the murder victim was overrun. When the investigator picked up the results of the examinery, it announced that the victim had sex shortly before his death.
How is that found in a man?
Whether he had "sex" can actually be not determined.
It can be determined whether traces of vaginal secretion can be found on the penis. This would be a proof of vaginal Sex.
Traces of sperm in the foreskin, on the penis can prove an orgasm, but without proof of vaginal secretion, however, no sex prove.
by adhering body secretions.