Sperm theft, also known as unauthorized use of sperm, forced fatherhood, spermjacking or spurgling (a portmanteau of sperm and burgling), occurs when a man's semen is used, against his will or without his knowledge or consent, to inseminate a woman. It can also include deception by a partner about their ability to get pregnant or use of contraceptives, birth control sabotage, and sexual assaults of males that result in pregnancy. Although the term uses the word "theft", it more closely falls under a state of fraud or breach of contract. Sperm theft is not illegal and is difficult to prove. It usually has no bearing on issues like child support. It is considered an issue in the men's rights movement.