My grandmother was celebrating her birthday, so all of her friends and family gathered to help her celebrate. We grilled and were having a good time; and, my brother and I decided to slip off and have some fun by ourselves. We snuck into one of the back bedrooms and began fucking; he threw me down on the bed and began licking my wet cunt. I moaned quietly and wrapped my legs around his head; I had missed him while he was on a business trip! His wife and little ones were in the next room, and we were both ‘getting off’ on it. He held his cock, told me to rollover, and…the door creaked open. We both were as still as statues.
Standing there at the door was grandmother’s best friend, Camilla. Instead of closing the door and walking out, she closed the door and put a chair under it. “Well, you dirty little shits,” she said. Then she smiled and told us that she would not tell anyone if my brother sucked her cunt and fucked it. I tried to stifle a giggle as my brother looked at me with surprise. Grandma Camilla slid off her clothes and lay on the bed. “Well, what are you waiting for, sonny? Your sister shouldn’t have all the fun with that delicious cock!” My brother got on his knees and began sucking her clit. I’ve never heard such guttural sounds come out of a woman’s mouth; I watched my brother’s cock stiffen as he crawled on top of her.
“Now ride me like there’s no tomorrow, stud!” She kept spanking his ass, groaning until she squirted all over his pants that he hadn’t bothered to remove. We returned to the party; and, when people asked about the stain on his pants, he would look over at Grandma Camilla who would holler, “That naughty boy just ran right into this little old grandma, and he made me spill my margarita! Can you believe it?” She’d wink, sip her cocktail, and return to her conversation. What a wonderful birthday party, even if I did have to share my brother with Grandma Camilla!