Different Kinds of Strokes

"Why don't you just swim around for me a little bit, just to start?" Jen says. You stand there, eyeing over her shoulder nervously, not wanting to draw more attention to yourself by splashing around. "Go on!" she urges, waving you on. Shooting her a glare, you nonetheless lower your body into the water and, slowly as you can to avoid kicking up any water, you start swimming through the water. You grimace between breaths as Jen lets out a low whistle, your bare bottom visible just under the surface of the water. It doesn't help your form any that you still have a rock hard rudder jutting out below you. Eventually though, you manage a lap around the pool, and other than the chesire grin and hungry glare from Jen, you haven't caught any attention.

"Not bad...." Jen says, rubbing her chin, "But maybe you could show me something different? How about...." and she gives an exaggerated smile of inspirationg, clasping her hands together, "a backstroke!"

"You can't be serious," you mutter, but a shooing motion from Jen tells you she very clearly is. Swallowing what's left of your pride, you slide back into the water, this time trying to float on your back as your shaft points up at the clear summer sky. Jen seems to be amused, at least.

"Dun-dun, dun-dun, dun-dun....", she lets out between chuckles as your "shark fin" glides across the surface of the water. "Damn!" she says, a little louder than you'd like, once you finish this lap back in front of her, "you've been in the water how long and you're still rock solid, huh?" she laughs again as you, shift uncomfortably on your feet and try to cover what she's already seen. "You know, I think maybe it'd be a lot easier to fit all of that back in these shorts if you attended to it first." She watches you and waits eagerly, as your already red and out of breath face grows even redder, and the hand that was moving to cover your shame suddenly halts just next to it.

"Please, Jen," you start, trying to keep your voice even, "just call it even, and I-I'll owe you one."

"3," she says, shifting and rubbing her ass into your captive swim trunks, raising three fingers.

"I-If you want to see... that, so bad, I can show you, in the bathroom, or something, just not-"

"2," Jen continues, folding one finger down. You wince and look from her uncaring, smiling face to your own penis, still standing, pointing out at your tormentor.

"1 and a half...." Jen says, face in a mock pout, and you swallow hard, not liking any option you have....