It was work

Rick had gotten used to an easy time with women. Knowing their sensitive areas, being able to follow their nervous signals, timing everything correctly in tune with their bodies had paid off for him. Donna, it seemed, was different.

It wasn't that he couldn't use his senses to detect her feelings. She'd gotten naked and climbed up on his dick only seconds after Tanya had left it and she rammed away at it like she was a professional pile-driver. The problem was, she just didn't have as much sensitivity. The nervous impulses were there but they were muted. Donna, it seemed, was non-orgasmic.

He didn't believe it at first. He'd been so successful with so many women he didn't want to believe this would be different. But, while she seemed to be having a good time grinding away at his dick, her arousal just wasn't mounting up.

"Oooh, your big cock feels so good," she said putting on every appearance of having a great time.

Well, that wasn't good enough. Rick didn't want women to have to fake it with him, he wanted to move the earth for them.

He went through his repertoire of things that had worked with other women... stimulating Donna's clitoris, finding her g-spot and making sure his cock gave it full attention, probing her asshole with his finger, giving her a brisk spanking to get bloodflow going in her sensitive areas, but nothing seemed to bring her closer to the edge.

"Oh yes, baby. That's so good," she gushed.

He pulled her closer, bringing his mouth to her ear. "Donna," he whispered, "have you ever had an orgasm?"

"All the time, baby," she said. "Just like now."

Except she was nowhere close.

Rick decided that if he never did anything good again, his life would not have been worthless if he helped Donna overcome whatever was preventing her from becoming orgasmic. It was obvious she didn't have problems with the act. Her twat felt great, tight but well-lubricated. This wasn't Deep Throat, so he didn't think switching to oral was the answer. But what was?

"Hey guys," he said, "I want to give Donna a new experience. Can you help me out?"

In this case, helping out meant taking Donna from behind while she lay on top of Tanya who ate her out while he fucked her.

Two other women grabbed a boob apiece and started sucking. Meanwhile, Charlotte siddled next to Rick and slid a finger up Donna's ass.

"Now, relax, enjoy the sensation, and try to really feel what's happening to your body," he said as he plunged into her pussy.

Charlotte timed her finger-thrusts to coincide with his dick thrusts and, after a couple of minutes, Tanya got her tongue into the same rhythm which Rick punctuated by occasional slaps to Donna's ass.