Sam needs attention

Brent reached over and scooped up some of the equine's sum off Samantha
"Are you glad we tried this?" Her eyes widened, and she nodded. He grinned and reached down to her pussy, massaging it with his sum soaked hand. She moaned, feeling the hot sweaty stuff spread over her lips.
"Brent, I'm so fucking horny. Make me cum, please..." Brent grinned and slid a finger into her cunt, and then another. He fingered her for a few moments before she reached down and took his cock in hand. "Enough fingers, i wanna feel flesh!" she laid back on the bench and spread her legs, and brent took up position between them. He was hard again now, and he wanted to fuck her in front of Karl. He slid into her quite easily, her hot slit dripping with anticipation. "haaaah... Karl..." she panted "Masturbate for us.... please?" Karl grinned and took his flacid cock in hand and started to fondle it. Brent reached over and stroked the head quite firmly. Sam looked at her husband.
"Anything goes, Sammy" he said quietly, smiling. Butterflys rose in her stomach, and she slowly reached out to the rising shaft. touching it was the most erotic thing she had ever felt. It was so different to Brent's, it was veiny, and silky. Together the three of them worked Karl back up to full height. Karl looked down to where Brent was squelching in and out of Samantha.
"I take it any hole's a goal now?" The couple looked at each other. Brent spoke first
"I wanna try anything today. I know that you were only-" Samantha cut him off with a gentle finger to his lips, and gave him a smile. Then she turned her head and took a few inches of Karl into her mouth and sucked. It tasted different too... they stayed like that for a few minutes, letting the newest member get a feel for it. Karl spoke up after a while
"If we want to try anything, I have an suggestion"