Movie description: "My Girlfriend's Sis Is An Exhibitionist - Delilah Day & Alex Mack". Alex Mack is chatting with his girlfriend, Lexi Grey, about their future trip, where their parents will finally meet. But Lexi is worried since she's sure her parents will invite her annoying sibling, Delilah Day, along as well. Even as Lexi says this, Delilah returns home and interrupts them. As Lexi continues chatting about the upcoming trip with Alex, Delilah becomes mischievous in the background. She secretly flirts with Alex as she bends over, showing that she's not wearing any panties, and lifts her shirt to grope her perky boobs. Alex tries to behave but it's very hard to resist. Later on, when Lexi is out of the room, Delilah is shameless as she comes onto Alex while stripping completely naked. Now that Lexi isn't around, Alex's resolve crumbles. It looks like that family trip might become more complicated after all!