(An excerpt)
"Aaron watched it. He could see the boy's pink testicles; they looked bloated. The boy's buttocks were muscular, smooth, the split between them deep and inviting. The boy moved his hips, pushing forward, pushing his penis inside Helen's passage again. From where Aaron was sitting, Helen's buttocks looked enormous.
When the boy spoke to Helen, his English had a slight Dutch accent. "What do you like? Tell me what you like and I can do it."
"You're doing fine," Helen said.
"I'll do it slowly."
"You take all the time you want."
The boy leaned forward, leaning over her back, then reaching underneath with both hands to grasp her dangling breasts. He tugged at the globes and pinched her nipples. His hips moved slowly, rotating, the muscles in his buttocks flexing.
Aaron's hand slowly stroked his penis. He slid his free hand down to hold his balls while he continued stroking his member.
The boy released Helen's breasts and leaned back again. His hands grasped Helen's hips, and he began thrusting with deliberation. His penis was thick in the opening, the shaft glistening. Helen moaned and shifted her knees a bit further apart.
Aaron wondered about the boy, what he thought of them. Maybe this sort of thing was common here, tourists having their fun with the hotel employees. Aaron thought Helen looked wonderful bent over like that with her big breasts hanging, her cunt dark and hairy.
The boy turned his head, looked at Aaron and smiled. "Would you like to do something to me? Maybe you can stick it in my behind."
But Helen said: "No, not now. Don't do anything, Aaron. Just stay where you are."
"All right."
"You can do that later if you want." She looked over her shoulder at the boy. "Go on, do it now. Do it faster."
The boy's hands gripped her hips more firmly. He started thrusting with a faster tempo, smooth strokes in and of her stretched opening. Aaron watched them, his hand stroking his penis. He hadn't thought of doing anything to the boy, but now that the possibility had been raised, he decided he wanted it. Would Helen really allow it?"
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"Three Women" by Anonymous (1992)