Barely

Other than a volleyball net, there are no structures on the beach, just a small strip of sand with some difficult to pass rocks on each end. Josh looks back at their bikes, but the beach towels are nowhere to be seen. As far as he can tell his options seem to be awkwardly stand facing away from Jessica and her friends or head into the water. The water seems marginally more natural so he starts walking towards it trying to project confidence.

"You are going to wash all of your sunscreen off!" Tina calls after him. "You're supposed to wait 30 minutes before you get wet"

Josh pretends not to hear her and gets in. Unfortunately the water is very shallow and he will have to wade for a bit to make it up to his waist. at least he is able to justifiably face away from the group. If he concentrates maybe he can get the situation under control. But he can't. The cold water is no help even as he gets up to his knees. He takes the opportunity to inspect the situation, and it is not good. The bulge is extremely noticeable, and the seams on his suit seem to be straining a bit. He hears a peal of laughter behind him and feels himself involuntarily cringe.

"Josh," he hears his step-sister call out. "Come back. We really don't want you to get sunburnt, and we need another player for volleyball because Tina is going to watch and take pictures."

He can't reasonably keep pretending not to hear them at this short a distance, so he has to turn around to respond. He feels a bit safer at this distance, but there simply isn't a reasonable explanation for a bulge this large. They must all think he's a perve now.

"I think I just want to swim for a bit" he calls back, willing his erection to go away unsuccessfully.

"Come on, it's really dangerous to be so *exposed* to the sun like that," shouts Tina. "The water magnifies the sun. You could get really hurt."

She sounded genuinely concerned. He decides his best option is just to go back and pretend that nothing is wrong. He can feels their eyes boring holes into his swim suit as he slowly wades to shore.

"Come on," says Tina to her friends, "Lets get him sunscreened real quick" and she squeezes a bit into each of her friends' hands.

Before he has any chance to object all 4 of them swarm. Natasha gets his back again, Jessica focuses on the backs of his legs, Amy timidly rubs the front of his legs, and Tina slathers the cream all over his bare chest. He didn't even get his top half wet, but that doesn't seem to dissuade his helpers. He can feel Natasha going even deeper down into his trunks, then he lets out a gasp as Tina slides her hand into his waistband, briefly contacting the tip of his hard rock cock. Tina makes eye contact with him and smirks, clearly unapologetic at the touch.

Just then Amy stumbles and puts her hands out to steady herself, straight onto his pulsing erection. It's all he can do to keep from cumming in his trunks. Amy shouts a barely coherent string of apologies as she runs off to the court, turning back to stare from a distance.

"Come on, Amy's waiting" sighs Jessica, grabbing his arm and pulling you towards Amy's hungry eyes. It turns out to be Josh and Amy vs. Jessica and Natasha. All of Natasha's jumping and bouncing does no good to keep his erection down. It seems like a minor miracle that she is able to stay covered in that suit. Josh and Amy do poorly as both of them are quite distracted, her staring at your crotch, and him trying desperately to pretend he doesn't notice. He is also very cognizant of all of his own bouncing and the obscene display that he must be making for Tina's camera.

Finally the game ends and the girls drag Josh into the water to splash around a bit, though their splashing seems to involve an awful lot of "accidental" touches to Josh, especially below the belt. He tries to wiggle out of the way, but there is always another hand or arm coming from another direction. The stimulation is getting very serious by the time the group decides it's time to start heading back for the evening.