Movie description: "Mamma's Boy". MAMMA'S BOY Step-Sister Tricks Brother into Sex After Discovering his Mom Crush SCENE opens on Rachel, a 20-year-old girl, as she walks down the stairs and struts into her family's kitchen -- barely dressed and hair tousled from a late night out partying. Her younger step-brother, Nathan, is eating cereal and dressed neatly in his school uniform. When he sees her, he lowers his eyes in disgust and exclaims that she shouldn't be walking around the house like that. Laughing at him, Rachel grabs some food and sits down beside her brother. She teases him for still wearing his uniformto school, even though he doesn't have to. He's 18-years-old and still acts like a school boy. Nathan tells her to leave him alone, he dresses like this because he is a good student. He's planning to graduate and go to college, unlike her! Ignoring him, she continues to tease him and act like a bitch when Nathan mutters that she's lucky his mom had to work the early shift this week because, otherwise, she would be in big trouble for making fun of him. She laughs even harder and calls him a mama's boy before he slams his spoon down and storms out of the room. Nathan storms into the living room and calls his mother. Over the phone, he tells her that Rachel is making fun of him again. Moreover, he's pretty sure she's hungover and planning to do something bad this week while she's out working. Telling on his sister is Nathan's attempt to try and get his mother to come home, because he doesn't like being alone with her. She makes him feel uncomfortable. His mother assures him that he is a big boy and that he shouldn't worry about his step-sister like that. She is just figuring herself out, especially with her father always travelling on business and not giving her attention. Besides, it's nice to see the two of them finally spend quality time together. After all, they are a blended family. She tells him she loves him, but she must go back to work, and the mother and son have a sappy, sentimental parting. When Nathan gets off the phone, he still feels frustrated. He turns to leave when he realizes Rachel has been listening the entire time. 'I make you feel uncomfortable? ' she asks teasingly. Nathan tells her not to be gross, they're like family. She needs to go put real clothes on and not dress like such a floozy. What would mom say? Rachel asks why Nathan is always running to his mom when he needs something. Does he have a crush on her or something? It's weird for him to be such a mamma's boy! Nathan tells her to leave him alone, grabs his backpack, and storms out of the house for school. CUT to that evening. Nathan comes home when he hears moaning. He calls out to his mother, but gets no reply. Slowly walking up the stairs, he realizes that the noises are coming from his bedroom! When he opens the door, he is shocked to see his step-sister watching one of his pornos on TV. Embarrassed, he tries to turn the TV off while she mocks him about all the dirty movies she found hidden under his bed. She is wearing nothing but a crop top and panties. Finally getting the TV to turn off, he runs over to his bed to try and conceal the pile of DVDs strewn all over. It seems like he is desperately searching for something. Smiling triumphantly, Rachel watches him scramble before asking 'Are you looking for the photos of mom? ' Nathan freezes. His eyes look wild with anger. Rachel pulls out a series of cum-stained photographs of his mother and shows them to Nathan. 'These look really soiled,' she says. 'How many loads did you drop on this photo? Does my dad know that you jack off to photos of your mother? ' Nathan tries to grab the photos away, but Rachel runs around the room, teasing them in his face and continuing to berate them. 'Between these cum soaked pictures and all your hardcore porn, I think it's safe to say that I have something rather important to tell our parents about your perverted behavior! '