Sal shoots first

I watched Sal and Sally Langfield through their back gate as the bronzed redhead twins had a little jack-and-jill-off contest with each other on towels in their backyard, wearing nothing but running shoes and socks.

Despite the hot day, my shirt felt a little clammy from my quick halt after chasing the twins up a hill, then down to their back gate. But my shorts felt warm and tight as I watched the brother and sister show off their cock and cunt to me all unawares.

Sal fisted his slippery shaft with one hand, pumping up and down his blue-veined penis with its swollen dark pink cockhead. His other hand was under his balls, rubbing and pinching the root of his cock. His head was thrown back on his towel, and his eyes were closed. His mouth tightened and relaxed with the passing sensations.

His sister Sally stared, fascinated by Sal's passionate masturbation as she pleasured herself. She cooed and oohed as she diddled her clit with one hand. I was impressed by the size of her swollen pink clit nestled between her slippery pink cunt lips. Her dark red pubic hair fuzzed down from the bush on her mound of Venus down on each side of her cleft. The fingertips of her other hand circled the wet pink inner folds around the entrance of her vagina, spreading her hot inner moisture around. "Uhhhhh?" she moaned with a rising tone like a question. "Uh hunhhh?"

Sal sucked in a deep breath, stiffened, and moaned loudly as the first shot of his ejaculation splattered his chest. He jerked his legs wider apart. "Rrrrrr...." he groaned softly as he painted his chest again and again. He kept stroking his shaft lightly with one hand. His other hand, with a stiff middle finger, pressed rhythmically on the tight-closed pink knot of his butthole.

Sally eased off her own masturbation as Sal came, content to squeeze her swollen outer pussy lips and watch her brother's spurting cock as his orgasm peaked and ebbed. She moaned and whimpered along with his noises.

Eventually Sal relaxed and opened his eyes. Sally smiled at him and clapped her hands for applause. He looked a little sheepishly at his sister. "How can I help, Sally?" he asked.

"Play with my tits," Sally said. "Rub underneath them and pinch the nipples while I jill off."

Sal rolled up his towel and set it by Sally's head. He sat down on it, his wet-tipped, deflating cock brushing Sally's dark red curls, and reached down to cup her breasts. Sally squirted more lubricant into her hand and went back to work on pleasuring herself with her fingers. She looked up at Sal, leaning forward over her, and guided him up on his knees so he could get a better handle on her breasts. Sal lifted up his sister's breasts and stroked gently on the sensitive skin revealed underneath. Sally sighed happily at his touch. In the low kneeling position, Sal's cock dangled down next to Sally's cheek.

I saw motion at the window again and wondered who was watching the twins from inside.

"Oh Sal," Sally said. "Oh Sal, I'm so close, could you just..."