As Ron pulled the car into the service station Lyn sat upright in the back seat next to their son Steve. The warm wet pussy juice trickling down her inner thigh, the hot glow of a fresh orgasm and the sweet yet salty taste of cum filling her mouth, served only to remind her of what she and her son had just done.
Steve sat there next to his mother with a vacant look of utter disbelief on his young face. As he stared at the back of the car seat in front of him his eyes transfixed and his mouth wide open in amazement, the only thing on his mind was his mother's last words to him.
Ron was ready for the break from driving and needed to stretch his legs and have something to eat and drink. The service station had a café and as he pulled the car to a stop in the parking space he tipped his head back slightly and said, "Just what we need, are either of you two hungry?"
Lyn turned to look at her son and they both smiled as she replied almost sarcastically, "I'm not, but I think Steve will eat something."
Steve followed his mother's eyes down to her wet panties and it immediately sunk into his young mind what his mother had really meant by that statement. The boy could hardly believe that this lewd dirty woman sat next him was his own mother. He had, for some time, harboured secret sexual feelings for her but had never in a million years thought that she'd had them too. Just thinking about what they had done and what his mother clearly still wanted them to do, was enough to keep his cock hard for weeks.
Ron pulled the car to a stop and got out quickly. Standing by the open driver's door he stretched his arms above his head and removed the stiffness from his tired body. Looking through the café window he could see the only people in there were the waitress and an old couple sat next to the door.
In the back seat of the car Lyn and Steve couldn't keep their eyes off each other. It suddenly came to Lyn that it wasn't just the dirtiness of the incest they had indulged in, but more to do with the fact that her husband had been just a metre away from them as they did it. Thoughts ran through her mind, fuelling her arousal once more. Was it the fact that it was her husband or could it have been anybody there? Was it just the thought of getting caught? Whatever it was it was so exciting, her orgasm had been the best she'd had for a long time and she wanted more.
Steve stared into his sexy mother's eyes and raw lust began to pump blood back into his dick once more. There were no questions in his mind only one thought. He had to fuck his mother and nothing else mattered.
Ron leaned through the open car door and peered into the back seat, "Are you two coming?" he asked.
"Nearly," Lyn whispered back under her breath as she smiled once more at her horny son. Ron didn't hear the reply and said, "I'm just going to the men's room, I'll meet you two inside the café," and he shut the door and walked away.
Ron was only feet away from the car, walking towards the men's room next to the café, when Lyn shuffled her arse around on the back seat. Leaning back against her door she quickly pulled her short skirt up to her waist. "Get my fucking panties off you dirty little boy," she growled at her son.