Step right up and show Sal how.

The bronzed redhead brother and sister looked back at me, each of us exposed below the waist and conspicuously aroused. Sal and I were standing, sporting hard-ons, and Sally was on all fours, her swollen pink pussy lips oozing juice.

"Love the cock, Steve," Sally said. "You wanna stroke off for us, or come down and show Sal how it's done?" she asked.

"Better step up before someone sees you anyway," Sal said.

I pushed the gate closed behind me and stepped forward into the sheltered space behind the Langfields' shed and their back fence. I stepped out of my shorts, since they weren't doing anything but being a tripping hazard.

"Are you asking me to lick your ass, Sally?" I asked, not wanting any doubt. I'd been hoping for a long time to try it with Lisa, but though my wife loved my tongue everywhere else, she was shy about any attention to her butt.

"Sure Steve, that would be great," she said, smiling. "I loved it when Dorothy did it, and I want Sal to learn too."

I rubbed my fingers over my chin and upper lip. No stubble to speak of, bless those triple-blade razors. "Okay Sally," I said. I looked at Sal. He nodded. "Sal, watch close and get ready to switch off with me," I said. "Just remember not to lick her pussy after you touch her ass."

I knelt behind her on the spread towel and bent down. Up close, I could smell a strong scent of excited female, sharper than Lisa. Her inner lips were deep pink, open and swollen, and her clit was the size of a fingertip. Between her smoothly tanned buttocks, a little higher up, was her anus. The little folds were so straight and regular they looked like pleats, and a few tiny red hairs circled the outside.

Like Sal, I decided to warm her up by kissing up on her pussy. I tilted my head sideways and kissed. Her strong, exciting woman scent filled my nostrils. I licked her salty, slippery lips and she sighed with pleasure.

"Mmmmmhhhhhh," Sally breathed.

I could hear a faint, rhythmic sound at my side and I could tell that her brother was fisting his cock as he watched.

I tickled her clit lightly with my tongue tip, and she shivered. "Oooh," she said. I wet my tongue tip and circled it several times round. Her hips moved in a little circle in response. "Oh yeah," she breathed, but twitched her hips away, saying "That's good, that's enough."

I traced a wet tongue line up her right butt cheek, then one up her left cheek, then one crossing. Finally I held her buttocks apart and kissed her ass.

"Awwwwhhhhh," she said. "Ah yeah, Steve."

I stuck out my tongue tip and circled it round. A trace of salt sweat, nothing else. Round and round again, wetter, kissing again, and around.

"That's so good," Sally said. She shifted, tilting a little. When I heard little wet squishes and felt a rhythmic motion under my chin, I could tell Sally was rubbing herself. "Oh yeah, lick me," she said.

I held a hand up and looked up and to the side. Sal dropped down beside me, and I came up for air. "Your turn, Sal," I said.

Sally's brother bent down. I held her buttocks apart so he could easily reach her anus with lips and tongue.

Sal started out a little stiff and slow, but in a minute or two, he seemed to get the right rhythm. He laughed with his tongue still on Sally's ass. Sally laughed back, a low sexy chuckle.

I took another turn. By the time I was ready to give Sal another chance, Sally's legs were quivering continuously. I knew she must be close to the edge. I whispered to Sal, "I think she's gonna come."

Sal himself was quivering with excitement as he bent down again. After a little giggling from each, his tongue slid back onto his sister's ass, up and down and round and round the way he saw me do it. Sally flicked her finger quickly over her clit and breathed fast and deep, sighing on the out breath.

I was rubbing my own cock from the excitement of being right there with the two young people as they discovered a new part of their sexuality.

"Steve," Sally whispered huskily. I bent down by her lips, and she said, "If Sal starts coming, could you squeeze his balls? He really likes that."

"I guess so," I said. I shifted back, kneeling close beside Sal and watching as he pleasured his sister's ass.

Sally's quivering hips started bucking, and her sighs rose to moans. She pushed herself back into Sal's face and stretched back her neck, then let it rise and fall with the waves of her orgasm.

Sal, too excited to contain himself, spurted onto the towel, coming along with his sister.

I put my hand between Sal's legs from behind, cupped his tight balls and squeezed gently.

"Oh yhhhh, oh yppffhhh!" Sal moaned, muffled by Sally's butt cheeks. His hips bucked, his balls clenched and his cock spurted again and again into the towel.

As their climaxes ebbed, the brother and sister gently crumpled onto their sides on the towel, leaving me with a swollen, throbbing cock pointed in their general direction. Though I still hadn't forgotten the ice cream...