His sister is the craziest and he takes advantage of her craziness. She bet she would fuck every guy, 3Β years older or younger than her, she knew for more than 10 years. She did this because they moved 7Β years ago and she lost contact of all her guy friends in the town where they lived so she thought it was easy money but she forgot a small detail. Her brother is 2 years younger than her and she knows him for more than 10 years. This was the time to pay and the audience was waiting.