Any girl needs people to admire her beauty, look at her like a bitch, use her charms. But to snore next to her or to beat a muffin is an insult to her womanhood. So she fell for a negro with a huge phallus. First, to get back at her boyfriend for disrespecting her, and second, to let the other guy have his way with her pussy. You think they're sorry for spreading their legs? Ha, girls need variety - and boredom makes them old. Youth is the most important thing for them!
To tell you the truth, considering the age of the brother and sister, it is quite normal that the brother became aroused by the sight of the naked girl in front of him. Maybe what happened next is not part of the plans of normality, but tell me honestly, would you resist such a dark-haired beauty? That's what I mean.