It's clear that little sister can't seem to catch a break from her older brother's constant sexual harassment. As she tries to study for an important exam, he keeps sneaking up behind her and grabbing her ass. Fed up, she turns around with a stern look on her face, saying "You better stop doing that, asshole!"
Undeterred by her stern warning, the older brother smirks and walks towards her, his erect cock clearly outlined underneath his pants. Without missing a beat, he forcefully yanks off her pajama bottoms, leaving her completely exposed and vulnerable. He then grabs her by the hair and pushes her down onto her knees. "Don't you ever talk to me like that," he growls as he roughly pulls out his cock, "Now, do as your big brother tells you."
Terrified and incredibly aroused, she hesitantly lowers her head to engulf his throbbing member.