School started up for Cam and Anna. Going to college was exciting and fulfilling. Anna was learning lots about wildlife management. She had always liked the outdoors, but the natural world was so much more fascinating than she ever knew. Cam was taking business, which Anna thought was boring, but she appreciated his practicality. At least he was taking photography too. She knew Cam wanted to earn enough money to give them a good life, but she knew he wouldn't be happy if he didn't have a creative outlet, so she was glad he was taking it.
College came with an influx of potential sexual partners as well. Cam and Anna had both slept with a few of the other people going to the university, but the college kids just weren't quite up to their level and Cam and Anna mostly slept with each other for that reason. The one exception was Bethany, who they had taken to visiting at the sex shop on a weekly basis. Cam had even fucked her in the ass, which is something Anna wasn't interested in, but Bethany didn't mind.
"You know," said Cam, "I still haven't seen Brad and Margo have sex. That seems like it'd be something else."
"No kidding!" agreed Anna, "They're so kinky! And besides, Brad's so huge and Margo is so small. Like, how does he not crush her? I suppose that's why they have the sex swing."
"Maybe we'll get to find out," said Cam, "Aren't they coming over this weekend?"
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"Hey Brad, hey Margo," said Cam as he opened the door, "How've you guys been?"
Brad was wearing a tank-top and athletic shorts, and Margo had on a green plaid mini-skirt and a white crop-top.
"We've been good!" said Brad, "Looking forward to seeing you guys again."
Cam helped them move their luggage into the guest room. Anna wandered down the stairs as they were finishing. She was wearing the oversized t-shirt she sometimes slept in.
"Hey guys!" said Anna, giving each of them a big hug.
The four of them got caught up. Margo and Brad wanted to know all about how college was going. Margo was especially excited about Cam taking photography. Brad had placed in finals at the regional strong-man competition, which Margo seemed really proud of. Brad seemed pretty proud too, it was a tough feat. Anna tried to mindful that not everyone appreciated the nuances of nature like she did, but she ended up telling everyone about a rare mole they had learned about this week.
"Brad. Margo." said Anna as the conversation died down, "Cam and I were talking, and we realized that even though we've had sex with you, we've never seen you guys have sex."
"Crazy," said Margo, "you're right. Do you want to?"
"Well yeah!" said Anna.
"Yeah, I'm pretty curious about it too," said Cam.
"Well let's go upstairs at least," said Brad, fumbling around in his bag, "I haven't seen Mom and Dad yet."
Brad fished out a short coil of rope and they headed upstairs. I wonder what that's for, thought Cam. Upstairs, Valerie was making breakfast and Jason was sitting at the table drinking coffee.
"Hi Jason, Hi Valerie," said Margo, turning to face her husband.
Margo reached her arms around Brad's neck and jumped up, wrapping her legs around him and kissing him. Brad moved his hands to her ass to support her.
"Babe," said Brad in a stern tone, "Did you forget to wear panties again?"
"I guess I did," said Margo, grinding herself on him while he held her, "So, I guess you'll have to punish me for it."
"Seems so," said Brad, setting her down, "And given that you're set on being such a slut, I'm not sure you deserve this nice shirt I bought you."
Anna could pick up that they were roleplaying, but it still caught her off guard when Brad put both hands inside the neck of Margo's shirt and ripped it in half, leaving her tits exposed and her shirt destroyed. It turned Anna on a ton, and she did not know why.
"Okay," said Brad, "go bend over the table. You still need to be punished for what you did."
"Okay," said Margo, turning towards the table.
"It's 'Yes, sir'," said Brad, "Don't forget again."
"Yes, sir," said Margo, bending over the table.
She was indeed not wearing any panties, and her skirt was so short that Cam could easily see her pussy lips sticking out as she bent over. Brad pulled Margo's hands behind her back and then tied them together with the rope he had gotten out of his bag. He pulled her skirt up, exposing her ass, and then brought his hand down hard on her right ass cheek.
Margo yelped when Brad struck her, and her skin was flushed a little where his hand had made contact with her bare bottom. Brad pulled his hand back and smacked her again and then a third time.
"Have you learned your lesson, Margo?" asked Brad.
"Ummm.. I think so," said Margo.
"It's 'Yes, sir', or 'No, sir'," said Brad, spanking her hard again.
Margo twitched and cried out again. Looking between her legs, Cam noticed that her pussy was wet. If nothing else, it was clear that Margo was getting off on the treatment she was getting.
"Yes, sir."
"That's better," said Brad, "Now, that you've gotten your punishment, how are you going to make it up to me?"
"I'm really sorry, sir," said Margo.
"I appreciate that," said Brad, "but I need something more to know you really mean it."
"I could suck your cock," said Margo, "would that help?"
"It's a start," said Brad, pulling his shorts off of his hard dick, "Get on your knees."
Margo got onto her knees, with her ripped shirt and her hands still tied behind her back. Brad moved towards her and presented his cock to her face. Margo leaned forward to take it into her mouth and started blowing him. Cam noticed Mrs. Blakely slip a hand into her underwear and start rubbing herself as she watched. Brad let Margo blow him for a few minutes and then stepped back.
"Very good," said Brad.
"Am I still in trouble, sir?" said Margo.
"Well, you made it up to me," said Brad, "but I'm not the only one here. Did you not think of how it might make them uncomfortable when you decided not to wear panties?"