Jim slipped his shorts over his trunks, pulled on a T-shirt and adjusted his socks. He checked to make sure everything else was packed for their day at the beach. Sunscreen, towels, beach umbrella, and CD player. His mother was making some sandwiches and putting together some other snacks and drinks for them. They piled into the car with Jim driving.
Soon they were at the beach and spread their large towel out and arranged all the items on it. Mariko put up the big umbrella for shade and Julia got out a cool drink for each of them. They had brought a big bottle of sunscreen and Jim offered to apply it to Mariko's back.
She sat with her back to him and he slipped the straps of her bikini off her shoulders and lathered her with the creamy lotion. Her butt looked so cute that he wanted to cream it up too, but he knew that would have to wait until later. He did slick her legs and spread the milky fluid up the inside of her thighs to her crotch. She wriggled her butt at him in appreciation, and Jim felt his cock stirring in his trunks.
Mariko then covered the front of herself, and applied the sunscreen to Julia's back. His mother lathered Jim, and then they all settled down to collect some protected rays, putting on their sunglasses and looking around at all the publicly exposed flesh on parade. Jim put a CD on the player, and they all grabbed a cool drink and were ready for their day at the beach.
After awhile, he and Mariko got up to go into the surf, splashing water on each other and swimming a little. He hugged her and ran his hands over her wet body, giving her a playful peck of a kiss, then holding on to her and kissing her on the lips. She seemed embarrassed by this and kept looking around.
"Japanese don't kiss in public," she said.
"Okay, just pretend it's private then," he said.
"It's difficult," she said.
He turned her around so her back was to him and snuggled up behind her, putting his hands on her hips, then briefly touched her breasts. She squealed and put her hands over his, lowering them to her exposed stomach. He kissed her neck and she made a little sound that was half surprise and half pleasure.
His dick started to grow, even in the cool water, and he pressed it into her butt. She laughed and kicked away from him. He watched as she kicked her heels and bobbed in the water, her dark hair tied in a ponytail behind her.
They got out, and dried off. Mariko laid on her back, with her enticing little breasts making cones in the air. It was all Jim could do to keep from grabbing them, pulling the tight bra top off and sucking them into his mouth. He took a sip of his drink and stared at her as she dozed on the big beach blanket, her eyes shaded with a towel.
"She is cute, isn't she?" Julia said.
"Extremely."
He turned to look at his mother, afraid he'd said something wrong, that she'd start to get jealous of all the attention he was giving their Asian houseguest. But he needn't have worried.
"I can hardly wait to get her in the sack again. Makes me horny just looking at her," she said.
"Me too," Jim said, trying to control the rising in his pants.
Julia knee walked over to where Jim was sitting cross legged and began massaging his back. She smoothed a little more lotion on him and put her head close to his as her fingers manipulated the muscles in his back, neck and shoulders.
"Next time I've got a dildo I want to use," she said. "On her, and on you. How does that sound baby?"
"A dildo. Wow Mom. I wanta see it."
"Oh, you'll do more than see it. You'll feel it, and I think you'll like it. It's a strap-on."
"Geez, so you're gonna fuck her, fuck her like a man."
"Yes, but gentler, different. And wait'll you get it. I'm dying to fuck you too baby. Would you like that, like for Momma to fuck her little boy?"
Jim was completely under his mother's control and would do anything she asked. He was sweating from her hot talk and his dick was impossibly huge in his pants. His heart was beating so fast he started gasping for breath and had to lay down on his stomach to conceal his raging hard-on from the strangers around him.
Julia just smiled knowingly and lay down beside him, her own breasts pointing up a little larger than Mariko's. Jim couldn't watch. He had to try to doze a little or he'd be humping his mother and their new houseguest right there on the beach.
When they got home, they were all drained from the day in the sun, sand and surf. Everyone wanted a shower and a nap. It was early evening when they emerged, one by one. Julia was first up, and she started preparing a light dinner. Jim followed soon after, yawning and stretching. Then Mariko came in, looking wonderful. The last remnants of her jet lag had evidently evaporated in the afternoon sun.
"Why don't you invite Rupert over for dinner, or after dinner?" Julia suggested.
"Great idea," Jim said, and went over to pick up the cordless phone.
Rupert, who had already heard a little about the new girl in the house, and had sampled Julia, was more than eager to come. He arrived just as dinner was ready. It was a simple soup, salad and fries summertime meal, nothing heavy or greasy. The soup was ramen, and Mariko was amazed to see that they ate it with spoons. She couldn't figure out how they managed that. She tried, since they had no chopsticks in the house, but it was clearly awkward and unusual for her.