Humiliate Heather

Heather writhed on the floor, softly rubbing her swollen pussy.
"Heather?"
She seemed to realise what she was doing, and sat up with a jolt.
"Oh my god Billy, I'm so sorry!"
Billy laughed
"No need to apologise" he said "at least now I know for sure how much of a slut you are"
Heathers cheeks burned with shame and she began to stand on her weak, shaking legs. Billy placed a hand on her shoulder, causing a small but noticeable shiver.
"And I also know how much you want me."
Heather attempted to deny it but before she could Billy planted a kiss on her lips. She buckled and almost collapsed again. When Billy pulled away her eyes were glazed with lust.
"Heather, what would you do to have my dick in your sweet cunt?"
She started to babble, promising anything and everything to him.
Billy hushed her by putting a finger on her lips, almost unconsiously she gave it a small lick.
"I know exactly what you'll do. Take off your clothes."

In record time she stripped. Tearing off her wet pants and and her shirt.
Billy took a moment to appreciate her small but perky boobs, the little pink nipples hard as bullets.
Heather obviously expected him to strip as well, her eyes were locked on the bulge in his pants. Billy smiled and went into the other room.
Heather followed him like a puppy follows its master.
Her eyes widened when Billy opened the front door and walked out onto the lawn. He beckoned for her to join him. She tried to resist but she crumbled in seconds and ran out to join him, covering her breasts and pussy with her arms/
Billy shook his head and she slowly placed her hands down by her sides.
It was still early and there didn't appear to be anyone on the street.
Billy pointed down the street
"Heather, if you run all the way around the block and back here, then we'll have some fun."
Heather recoiled, taking a step towards the door.
"No way, I can't do that!"
Billy shrugged
"Oh well, looks like you'll just have to keep entertaining yourself in your bedroom at night."
Tears appeared in Heathers eyes but she grudgingly started up a jog and began her journey down the street, Billy's mocking laughter behind her.

After a minute of watching Heather move down the road, Billy went inside and shut the door. He reclined on the sofa and silently thanked every Deity he could think of. Fighting the urge to masturbate, he went upstairs to his sisters room and started rifling through her wardrobe.
There were a few outfits in there that had caught his eye and he laid them out on her bed for when she returned.
His thoughts were interrupted by Heather banging on the door.
She must have flat-out sprinted to have gotten back there so fast.