Lucy puts his mouth to work.

Lucy rolled her eyes as she shoved her lottle brother down on his knees, took hold of his hair, and pulled back on his head. Adam let out a small gasp of pain before almost immediately gagging on his sister's cock as she rammed it into his warm wet mouth.

"Better do a good job with sucking me off, little brother, or else I'll have no choice but to releive myself in that new little pussy you have." She chuckled while forcing Adam to move his head back and forth on her large and thick cock. "And i swear on everything if you fucking bite me I will absolutely put your ass into the ground."

Adam closed his eyes and started working his head a bit more eagerly after his sister's threats. He needed to focus on getting his sister off or else she was going to fuck him.