Birthday Blow - with Frosting on Top

They met at the pool at her apartment complex a couple of months ago. Her stepbrother began talking to Jon and invited him over. She was fascinated by him and asked him if he could get next to her to cuddle. An hour later they were fucking in her room while her stepbrother was banging on the door telling them to shut up. They fuck all the time now. Once they were fucking on an air mattress and it blew up under them but he kept going until it was completely deflated. Tonight is her birthday and a lot of thing are about to get blown besides the candle.