We play some beach volleyball.

"C'mon, let's get this started already!" Samantha says, stretching her body. "Becky, where's that volleyball? I wanna get the blood pumping."

""Looks like John is already one step ahead of us," Becky sniggers, still eyeing my erect cock. Samantha gives her a teasing smack to her butt.

The four of us form a misshapen square around our own patch of the beach and start to pass the ball around. It takes a while to get the momentum going, but it's not long before we're running and diving into the sand, making desperate plays for a stray ball. Within minutes we've gotten sand all over ourselves and have a good sweat going on.

"Oh god it's so hot," Susan gasps, wiping her chin.

"Yeah," Samantha nods, wiping her brow. "But it feels good!" I nod in agreement. All the exercise had force my blood out of my penis and back into my body, but it was still awkward to run around with my junk swinging left and right.

After a bit more volleyball, we decide to jump into the sea to wash off our sandy bodies. As I stand waist-deep in the water, I can't help but notice the glistening bodies of my friends as they got their bodies wet. Whether it was the sweat or the seawater, I don't know. But watching them rub off the sand from their bodies quickly gives me a hard-on.

"John, you okay?" Samantha asks, noticing me staring. I snap myself back to attention and quickly nod. "Yeah, it's nothing," I say.