MY BIRTHDAY PRESENT

Last year, my parents went on a trip to Australia for two months visiting their friends from college. They decided to give some spare keys to my mom's friend, Grace, in case I needed help with anything in the house. She's about 5'10, with dark hair and green eyes, her ass is amazing, and 34DD tits. They live close to each other and she used to always be in our house. I jerked off thinking of her most nights as a horny boy. So my parents' flight left the day before my birthday, so Grace came over. We talked about random shit for ages until we got talking about sex. She told me she never married because she didn't like being tied down.

"Besides", she had said, "How would I know who has the best dick if I stayed with the one guy? I'd rather have loads at once then one for life. What about you, babe?" she said. "Do you have a girlfriend?"
"Not right now", I said, "I've only had one before."
"But did you have sex with her?" She asked.
"Yeah", I said, "But it didn't feel too great."
"You're missing out, I could show you a great time." She said.
"Maybe that can be your present to me for my birthday", I said.

I meant it as a joke, it must have been because I was horny at the time, but she smiled at me and said "Sounds good to me. What would you like me to do?" I thought she was joking at first too, but I still got really hard thinking of her fucking me, so I said "wear some sexy black lingerie and bring your favorite toys too. And call me Sir." She just laughed and said "Whatever you want, Sir." She left shortly after that. That night when I was in bed, I got a snapchat from Grace. I opened it and it was a selfie of her wearing some black lingerie licking her lips, and she had typed "Is this sexy enough, Sir? ;)" My jaw dropped and I immediately started getting hard. I sent back a dick pic and said "You look perfect, I can't wait for my present." She replied with a picture of her tits, and wrote "Mmm, you're bigger than I thought you'd be, Sir." Then she wrote, "I want you to treat me like the bad slut I am tomorrow. Use me however you want."

The next day, Grace arrived and came in wearing a trench-coat. "I'm wearing what you wanted underneath, Sir. Happy birthday." She started to walk in, but I stopped her and told her to show me, and she flashed her lingerie at me. "Take it off" I said. She replied, "Yes, Sir", and took a vibrator out of it, took it off, and dropped the coat in the doorway. I grabbed her by the hair and kissed her intensely, before I pushed her down to her knees. "Take out my cock" I ordered her. "Yes, Sir", she said, and undid my belt and unzipped my jeans. I was already really hard and my cock sprang out in front of her face. "Now", I said, "You're gonna suck my cock right here in the doorway until it's nice and wet." "Yes, Sir", she said again, and went straight to work on it. She really was a slut, and she licked it and spit on it and gagged on it over and over. A car passed on the road behind her but she didn't stop, she just looked up at me while she deepthroated as much of me as she could take.

Once my cock was all wet and slobbery, I grabbed her by the hair again, brought her over to the couch, got her vibrator and rewarded her. She started to moan as I put it up to her wet pussy lips. "Do you like that, slut?" I asked her. "Yes I do, Sir", she said, and she started to grind her pussy onto it. I kissed her and bit her neck while she moaned "Thank you, Sir", and then I started taking off her lingerie, it didn't take long before she moaned loudly, "Sir, I'm going to cum!" She started to buck and shake as she came on the vibrator. Once she stopped shaking and started panting, I threw it away then bent her over the sofa, lifted her ass in the air , arched her back and slowly pushed my wet, hard cock into her tight ass. She gasped as it pushed all the way in her, stretching out her asshole. I started sliding in and out of her, smacking her ass to feel her tighten around my cock. I grabbed her hair and lifted her up as she wrapped her arms around my neck from behind, and I started to feel myself getting close. I choked her while pounding harder in and out of her wet ass, and whispered "you want my cum, don't you, you fucking slut?" "Yes... Sir", she panted as I was about to cum, "Cum... in... your slut!" I grabbed her hips and thrust all my cock into her ass, filling her up with my hot, sticky cum as she gasped and moaned, "Happy birthday, Sir."

I definitely enjoyed my present for the whole two months, and still do whenever I go to her house.