Serena would fuck long, hard, and repeatedly, but would convey no enjoyment of the process. She's orgasming, but you'd never know it. Even as she rides you like a cowboy, she never moans, hardly blinks, and just stares straight ahead.

THUD THUD THUD THUD THUD THUD THUD THUD THUDTHUDTHUDTHUDTHUDTHUDTHUDTHUD... THUD.
"You may rest for thirty seconds, neighbor. I will then resume. Is there anything you need?"
"...Orange juice and an IV?"
"Would this require me to leave the bed?"
"Yes."
"Too bad."
THUD THUD THUD THUD THUD THUD THUD THUD THUD