Researchers reviewed records from three hospitals over a 13-year period in Campinas, Brazil (3 million population) and came to the conclusion that ‘cowgirl’ — when the woman is on top of the man — was responsible for half the penis fractures reported amongst straight couples. It’s now been cited as the most dangerous sexual position in a paper called ‘Advances In Urology’.
They concluded that as the woman is on top “she usually controls the movement with her entire body weight landing on the erect penis, not being able to interrupt it when the penis suffers a wrong way penetration”.