Bringing the foot back up to his face again, he began to taste his sister's toes, the sexual flavour coating his mouth. Emily followed his lead, working to lick the entirety of Megan's foot, inch by inch. When they were both finished, Sam removed his sister's foot from his mouth and set it gently on the pile. Emily did likewise. Reaching down, he bent his head over Megan and leaned in. Her eyes widened as he kissed her, sharing the taste of her own foot sweat with her. After a sensual kiss, he took his lips from her face.
Backing away, he commanded Emily to lick Megan's ass, inside and out. She seemed more disgusted by the prospect than that of licking Megan's feet, but bent down anyway. Sticking her face just below Megan's butt, she wrapped her lips around her sister's anus and stuck her tongue out. Megan's butt immediately opened in surprise, and let Emily's tongue in, eliciting a moan.
Emily began to tongue her sister, moving it in and out, coating her tongue in her sister's dirty taste. Reaching over, Sam forcefully grabbed Emily's head and forced it farther into Megan's asshole. He pushed her hard enough for her lips to go in, and Megan cried out. After allowing her to lick deep inside Meg's butt, he pulled her out.
She gasped as she was removed quickly. Sam, still holding her hair, brought her to Megan's face and made them kiss, letting Meg taste her own insides.
Letting go of Emily's head, he moved towards his sister's backside, his dick by now erect. Emily stopped kissing her sister and lay down next to her, breathing heavily. Angling his penis towards her butt, he sunk it in deep and all at once, disregarding Megan. She cried out, and he continued thrusting, turned on by the hot, wet feeling of her guts.
Megan was by far the loudest of the three, and Sam instructed Emily to shut her up with her feet. She moved behind her sister's head and removed her socks and shoes before placing her sweaty feet over her sister's face. Meg's moans were muffled, and her deep breaths made her almost taste her sister's feet.
Thrusting strongly, Sam felt that Megan was slightly tighter than Emily and that his penis went through a bend not present in Emily's insides. After a few minutes, Megan orgasmed a second time, clenching around his penis wetly. After she was done, he withdrew.
Seeing that he was ready, Emily moved her feet and put her socks and shoes back on. Sam manually replaced Megan's before grabbing her head and violently thrusting into her mouth. This time, his dick kept going straight into her throat, unheeding of the opening. His sister gagged from the penetration and the strong taste of her own butt, clamping down hard on Sam's dick. Already stimulated from the anal, Sam gripped her hair tightly as he came hard down her throat. His sister tried to push off of him weakly but failed, and duly drank his semen instead.
Satisfied, he pulled out after his orgasm, leaving Megan coughing and spluttering. He was pretty tired, but knew that Emily needed to eat too. However, he would need to be aroused again because his dick was already nearly flaccid. Resolving to try something new, he took off his own black sneakers and sweaty socks and laid them on the clothes.
His hygiene was strict and impeccable, and he did things most men didn't do, like shaving his legs and softening his feet. His own scent wafted upwards to his nose; strong but inoffensive, and much like Emily's. His sister was by now complacent and didn't bat an eye at him wanting her to reciprocate the actions.
Holding his feet, she breathed deeply before beginning to lick them, caressing his soft, feminine toes with her warm tongue, leaving saliva behind. He shivered at the touches and induldged the sensitivity of his feet as she thoroughly licked him clean. Pulling his feet away, he put his socks and shoes back on, adopting the same regimen as the girls.
Sliding his trousers fully off he pointed his butt at her. She came forward immediately, and positioned her face under his thin, pale buttocks. His butthole was hairless and pink, as he valued his hygiene there especially. Emily wrapped her lips gingerly around the small hole and began to tongue it. Sam felt a stimulating sexual itch, unlike that of penile stimulation. He grabbed Emily's head and forced her deeper, letting her lips enter like with Megan. After she had licked him thoroughly, he pulled her away.
Emily remained in the same position instead of moving to his crotch. Sam wondered why as delicately soft fingers teased his asshole. He twitched at the sudden introduction, allowing her fingers inside of him. He moaned as she poked and prodded his prostate, his ass feeling full.
Still fingering him, she moved her face to his crotch and allowed his dick to enter. Her mouth was wet with saliva and her teeth teased his shaft with every motion. She led him deeper and into her throat as she pressed into his prostate. Pinning her head down, he came strongly into her throat, the prostate stimulation strengthening his orgasm.
When he finally pulled her back, she pulled out her fingers and sucked on them. Removing them from her mouth, she kissed him. She was gentle and intimate, the erotic flavours extending his arousal. After a minute, she removed her tongue and lay down beside him.
Sam enjoyed their new relationship immensely, and was glad that it would continue after they got out of the pit. After a few minutes, he moved on top of Emily and kissed her. He emulated her style, trying to make it both romantic and sensual. Reaching around her, he grabbed her head gently and playfully mussed her hair. Gazing into her bright eyes, he gave a final suck on her tongue before pulling out.
Still maintaining eye contact, he said, "I love you, sis."
"I love you too," she cooed.
Neither of them knowing whether the love was familial or intimate, they cuddled and fell asleep.