According to my wife, this is how her brother demonstrated his ability to โbe a manโ when he was thir*teen and she was twel*ve. They played โdoctorโ to expose their genitals and show the difference between a girlโs body and a boyโs. They were so close in age that they became lovers and were closer than siblings probably should have been. Frequent sexual contact was considered normal affection by them by the time they were in their mid-teens. Vaginal inseminations were also considered compulsory because of the pleasure involved even though birth control was something they didnโt even consider. My wife is still amazed by the fact that she didnโt get pregnant but it was a good thing because of the scandal it would have caused.