Here’s one of the practice problems for my genetics midterm exam:
27. A boy named Simon does DNA fingerprinting for everyone in his family, and he finds out that:

E) that he is the product of the union between his uncle’s sperm and his own sister’s egg.
Promotes family values, moral integrity, and freedom. I love the Canadian education system.
genetics  
ahahahahahaha  
i died when i read that  
science  
college Oh my god, what? This is why I’m in English. But how old would his sister have to be???? XD