"Pulling out before the man ejaculates, known as the withdrawal method, is not a foolproof method for birth control. Some ejaculate (fluid that contains sperm) may be released before the man actually climaxes. In addition, some men may not have the willpower or be able to withdraw in time."
"Oral sex may lead to the woman developing throat cancer due to the Human Papilloma virus (HPV), the same virus that causes cervical cancer. If the man is already infected with the virus, there is a high risk of the partner developing throat cancer if they engage in oral sex. The symptoms of cancer may take a short time to show if one is a smoker or takes alcohol because these substances increase the risk of developing the cancer. If the woman has HPV and the man engages in oral sex, he also may develop throat cancer."