[M4f]Family vacation

Hi all. I'm just dipping my toes back into rp after a brief break. I'm looking to do a simple rp to get my groove back, so to speak. So I thought I'd start with something simple like a little naughty adult fun on a family vacation. Whether it be mother-son(preferred), dad-daughter, brother-sister, or any other combination you can think of, I am down to try. Below is a little prompt we can use, or if you'd rather we can build one together.

AJ was hot, sweaty, and tired. This road trip dad planned for the family was bad enough, but the car losing air conditioning on day 2 of a 21-day trip was brutal. Not to mention, he keeps buying things wherever we stop. We are now 4 days in, and the heat is starting to get to everyone. Sara his sister has been nothing but a bitch since it started. She probably misses a boyfriend a bit too much and needs a proper. Aj shakes.his head as he realizes the thought of fucking his sister into submission was creeping into his head. Whatever, she is in the front seat now. She is dads problem. Mom made her switch after the last argument we had. Aj looks at his mother, sitting there wearing a too tight tank top, no bra, and a pair of short cotton shorts. He watches a sweat drips down his mother's neck between her ample, slightly sagging breasts. He watches as her chest rises and falls with her breasts. Before he knows what is happening his cock is strained against his own shorts. It's then his eyes rise back up his mother's body, and he makes eyecontact with her. She smiles knowingly but says nothing. After the next stop, dad made another purchase. And now there is even less room in the hot car. "Just sit in AJ'S lap honey." Dad says. "it will be fine for a couple of days, and we can ship it all home then." Mom gingerly slides into his lap. Her round ass firmly against his growing erection. Her cleavage right under his nose......