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Sarah was fidgeting again. He knew she had to piss, even though she didn't say anything.
She was bouncing up and down, and every few minutes she would press her hand down between her legs, over her pretty pink bikini.
He couldn't see a wet spot yet, but there would probably be one soon.
The tiny slip of fabric showed off the soft folds of her pussy... He had definitely been looking regularly.
She bit her bottom lip and squeezed her legs together.
"You ok?"
He startled her. She blushed bright red and put her hand between her legs again.
"Yeah, I'm… I'm ok."
"You sure? You look a little nervous."
He didn't think she could blush any brighter, but she did. She closed her eyes and bit her lip again.
"I need a wee… Baby, I have to go really bad!"
"Just go in the water…"
"I can't, everybody will know!"
He was sure a few people already noticed, but he wouldn't tell her that.
"Ok, just go here."
"What?"
"Just pull your bikini out of the way and pee here."
"Are you crazy?!"
"Come on, it's easy, nobody will know."
She looked tempted. He knew she must have been bursting.
"Come on, I've got to go too, I'll show you."
She didn't say anything, but she didn't try to stop him either.
He pushed his towel out of the way so he wouldn't get it wet and made sure it wouldn't be too obvious what he was doing.
Thankfully his swim trunks were kind of short and not too tight. He used his fingers to pull his dick down the right leg of his trunks, just enough to get the tip out so that he wouldn't accidentally piss his trunks.
She was staring at his dick, her eyes wide and her mouth slightly open.
His bladder was kind of full, and he'd been careful to keep hydrated all day, but in this strange position, out in the open and with Sarah staring at him nothing came out, so he pushed a bit and tried to relax.
A few drops sprinkled onto the soft sand, so he took a deep breath and pushed again.
This time a short spurt came out with an audible hiss. It only lasted a second, but it was enough to make a wet spot the size of the palm of his hand.
This seemed to wake up his bladder a bit, and when he relaxed again he didn't have to push. He pissed for about three seconds, long enough to get a good stream going before he squeezed his dick to cut off the flow.
He had to wait for it to soak into the sand before he could piss again, he didn't want anybody to notice.
Now that he'd started pissing it was hard to stop and another long spurt leaked out, and even with his hand squeezing his dick he kept dribbling.
He let go and pissed for a few seconds, and when he tried to stop again he realised he was too far gone. He was pissing hard now, he wouldn't be able to stop until his bladder was empty.
Sarah whimpered a little. He had almost forgotten she was there.
She had tears in her eyes and both hands were between her legs, her thighs pressed together tightly.
She couldn't take her eyes off his pissing dick.
"Come on, babe, there's no point hurting yourself, just let it go…"
"I can't!"
"There are no toilets near here… Trust me."
She whimpered again and opened her legs. When she took her hands away from her pussy he saw that the bright pink fabric was stained dark. She'd obviously leaked a bit already…
He made sure she wasn't going to piss on her towel, and then helped her to pull her bikini out of the way.
She spurted as soon as he pulled the fabric away and she gasped and tried to squeeze her legs together again.
"It's ok, babe, just relax…"
She spurted again, longer this time, and even though he could tell she was trying to stop she kept leaking.
"Relax…"
She spurted again and then started pissing hard. It was almost like she was pushing to empty her bladder faster.
He realised she was making a little stream that would be visible to anybody who walked past, so he reached underneath her and scooped away some of the wet sand to make a hole for her to piss in.
She was still pissing hard, she must have been dying to go…
She filled up the hole, but it was soaking into the sand.
The stream was getting weaker until it finally stopped. Piss was dripping from her lips, but she covered herself with the bikini again.
He didn't notice how hard he was until she was staring at him again.
"You liked that, didn't you?"
"Yeah… It was really hot watching you piss like that."
She bit her bottom lip again and slowly reached over to knead his erection through the thin fabric of his trunks…
"Babe, somebody's gonna see us!"
She just gave him an evil little grin.
"O shit, I've created a monster!"